# Corporate groups and holding companies headquartered in Australia

Tamtam tracks 280 corporate groups and holding companies headquartered in Australia. This list ranks the 100 largest by number of employees on LinkedIn, led by Greencap, Freelancer.com and Woolworths Group. Their median headcount is 2,619. Half of them were founded in 1978 or later. The most common headquarters are Sydney (25), Melbourne (14) and Perth (6).

This list covers corporate groups and holding companies in Australia. The companies shown are mostly large, established groups, with a strong presence in retail, financial services, and technology. Many of them are headquartered in Sydney, reflecting its role as a major business hub.

Key companies include Greencap, a diversified corporation in home improvement and apparel, and Freelancer.com, connecting users worldwide with diverse projects. Woolworths Group operates major retail brands, while Commonwealth Bank is a leading financial services provider. Telstra focuses on technology and content solutions, and CSL delivers lifesaving medicines and therapies. The data shows a concentration of headquarters in Sydney.

🇦🇺 Australia · 100 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Greencap](https://www.tamtam.ai/c/wesfarmers) (wesfarmers.com.au)<br>A diversified corporation in Australia, providing goods and services in home improvement, apparel, office supplies, and industrials sectors while focusing on shareholder returns and corporate responsibility | Retail | 🇦🇺 Perth | 107,000 | 1914 |
| 2 | [Freelancer.com](https://www.tamtam.ai/c/freelancer-com) (freelancer.com)<br>Connecting millions of users worldwide with projects in diverse fields, offering secure payments and specialized freight services. | Technology, Information and Internet | 🇦🇺 Sydney | 91,305 | 2009 |
| 3 | [Woolworths Group](https://www.tamtam.ai/c/woolworths-group) (woolworthsgroup.com.au)<br>Operates major retail brands like BIG W, focusing on customer experiences, community support, and career development through innovation and team efficiency across Oceania. | Retail | 🇦🇺 Bella Vista | 61,176 |  |
| 4 | [Commonwealth Bank](https://www.tamtam.ai/c/commonwealth-bank) (commbank.com.au)<br>Leading provider of financial services in Australia, offering banking, funds management, insurance, investment, and sharebroking products to help individuals manage their finances | Financial Services | 🇦🇺 Sydney | 47,706 |  |
| 5 | [Telstra](https://www.tamtam.ai/c/telstra) (telstra.com.au)<br>Providing technology and content solutions for a connected future, with a focus on customer experience and Australia's largest mobile network | Telecommunications | 🇦🇺 Sydney | 35,493 | 1901 |
| 6 | [Woolworths Supermarkets](https://www.tamtam.ai/c/woolworths-supermarkets) (woolworths.com.au)<br>Large scale Australian retail operations focused on fresh food delivery, community support, and innovative grocery solutions through extensive store networks and digital development. | Retail | 🇦🇺 Bella Vista | 26,047 |  |
| 7 | [CSL](https://www.tamtam.ai/c/csl-melbourne) (csl.com)<br>A global biotechnology company that delivers lifesaving medicines, vaccines, and therapies, with a focus on advanced technologies to save lives worldwide | Biotechnology Research | 🇦🇺 Melbourne | 23,172 |  |
| 8 | [Qantas](https://www.tamtam.ai/c/qantas) (qantas.com)<br>Global airline dedicated to acknowledging and respecting Indigenous custodians, fostering creativity, diversity, and innovation among its workforce, and prioritizing people in travel | Airlines and Aviation | 🇦🇺 Mascot | 18,052 | 1920 |
| 9 | [Westpac](https://www.tamtam.ai/c/westpac) (westpac.com.au)<br>A major banking institution in Australia and New Zealand, offering a wide range of financial services globally with a focus on customer prosperity | Banking | 🇦🇺 Sydney | 16,224 | 1817 |
| 10 | [Westpac Group](https://www.tamtam.ai/c/westpac-group) (westpac.com.au)<br>Leading financial institution offering banking, wealth management, and customer-focused services across Australia, Asia, UK, and the US. | Financial Services | 🇦🇺 Sydney | 14,973 |  |
| 11 | [IAG](https://www.tamtam.ai/c/iag) (iag.com.au)<br>Leading general insurance company in Australia and New Zealand, providing coverage under various brands, supporting communities in preventing and recovering from risks since 1851 | Insurance | 🇦🇺 Sydney | 12,798 |  |
| 12 | [Orica](https://www.tamtam.ai/c/orica) (orica.com)<br>A leading provider of mining and infrastructure solutions, specializing in explosives, blasting systems, digital solutions, and a range of services with a strong focus on sustainability | Mining | 🇦🇺 East Melbourne | 11,326 | 1874 |
| 13 | [AIB](https://www.tamtam.ai/c/aib) (aib.ie)<br>Major retail bank in Ireland, providing personal, business, and corporate customers with mortgages, savings, and diverse banking products and services. | Banking | 🇦🇺 Molesworth Street | 11,095 |  |
| 14 | [Endeavour Group](https://www.tamtam.ai/c/endeavour-group) (endeavourgroup.com.au)<br>Endeavour Group brings people together through memorable experiences, operating over 1600 stores and 330 hotels with a focus on creating a sociable future | Retail | 🇦🇺 Sydney | 11,046 |  |
| 15 | [Cotton On Group](https://www.tamtam.ai/c/cotton-on-group) (cottonongroup.com.au)<br>Retail group operating eight Australian lifestyle brands across 20 countries, focusing on people, planet, creativity, and positive impact. | Retail | 🇦🇺 Geelong | 10,537 | 1991 |
| 16 | [Ray White](https://www.tamtam.ai/c/ray-white) (raywhite.com)<br>Global leader in real estate with over 120 years' experience, delivering proven results, exceptional leaders, and impeccable customer service Market-leading in all sectors | Real Estate | 🇦🇺 Sydney | 9,956 | 1902 |
| 17 | [Probe Group](https://www.tamtam.ai/c/probe-group) (probecx.com)<br>Provider of customer experience and business process outsourcing services combining digital innovation with a people-first approach across global markets. | Outsourcing and Offshoring Consulting | 🇦🇺 Melbourne | 9,782 |  |
| 18 | [Laing O'Rourke](https://www.tamtam.ai/c/laing-o-rourke) (laingorourke.com)<br>An international engineering enterprise focused on innovation and excellence in the construction industry, with operations in Europe, Australia, and the Middle East | Construction | 🇦🇺 | 8,875 | 1978 |
| 19 | [Computershare](https://www.tamtam.ai/c/computershare) (computershare.com)<br>Global leader offering diverse services and products across multiple industries, promoting entrepreneurial spirit and service excellence for talented employees worldwide | Financial Services | 🇦🇺 Melbourne | 8,166 |  |
| 20 | [Flight Centre Travel Group](https://www.tamtam.ai/c/flight-centre-travel-group) (fctgcareers.com)<br>Global travel company with over 12,000 employees, offering leisure and corporate travel services in 20+ countries, focused on opening up the world for travelers | Travel Arrangements | 🇦🇺 South Brisbane | 7,972 |  |
| 21 | [BlueScope](https://www.tamtam.ai/c/bluescope) (bluescope.com)<br>A leading international supplier of steel products and solutions for building and construction markets, focusing on sustainability, innovation, and a circular economy approach | Wholesale Building Materials | 🇦🇺 Melbourne | 7,871 | 1928 |
| 22 | [Aristocrat](https://www.tamtam.ai/c/aristocrat) (aristocrat.com)<br>A global entertainment and content creation company delivering world-leading casino and mobile games, focused on creating value and prioritizing employee well-being | Gambling Facilities and Casinos | 🇦🇺 North Ryde | 6,968 |  |
| 23 | [Harvey Norman](https://www.tamtam.ai/c/harvey-norman) (harveynormanholdings.com.au)<br>Franchisor granting franchises to independent operators retailing electrical, computers, appliances, furniture, bedding, home improvements, lighting, and flooring products. | Retail | 🇦🇺 Homebush West | 6,662 | 1982 |
| 24 | [Super Retail Group](https://www.tamtam.ai/c/super-retail-group) (superretailgroup.com.au)<br>Ownership of leading retail brands in auto, sports, and outdoor leisure sectors, offering products through stores and digital platforms. | Retail | 🇦🇺 Strathpine | 6,662 | 1972 |
| 25 | [Newcrest Mining](https://www.tamtam.ai/c/newcrest-mining) (newmont.com)<br>A leading producer of gold, copper, silver, lead, and zinc Known for strong ESG practices, value creation, safety standards, and technical expertise | Mining | 🇦🇺 Melbourne | 6,237 | 1966 |
| 26 | [AMP Limited](https://www.tamtam.ai/c/amp-limited) (amp.com.au)<br>A retail wealth management and banking business providing financial advice, superannuation, and banking services to help customers achieve their financial goals | Financial Services | 🇦🇺 Sydney | 6,100 | 1849 |
| 27 | [South32](https://www.tamtam.ai/c/south32) (south32.net)<br>Specializing in developing natural resources, we aim to enhance lives for present and future generations, trusted to unlock resource potential | Mining | 🇦🇺 Perth | 5,267 | 2014 |
| 28 | [WSP in Australia](https://www.tamtam.ai/c/wsp-in-australia) (wsp.com)<br>A leading professional services consulting firm providing technical expertise and strategic advice in various sectors, designing lasting solutions for future generations with integrated digital innovations | Professional Services | 🇦🇺 Sydney | 4,487 |  |
| 29 | [Fitness and Lifestyle Group](https://www.tamtam.ai/c/fitness-and-lifestyle-group) (fitlg.com)<br>Leading fitness, health, and wellness group offering innovative physical and digital health and fitness solutions to help people live healthier lives | Wellness and Fitness Services | 🇦🇺 South Brisbane | 4,386 | 2016 |
| 30 | [Insignia Financial](https://www.tamtam.ai/c/insignia-financial) (insigniafinancial.com.au)<br>A leading wealth manager in Australia, founded in 1846 to protect families, now offering a range of tailored financial solutions | Financial Services | 🇦🇺 Melbourne | 4,262 |  |
| 31 | [Mineral Resources Limited](https://www.tamtam.ai/c/mineral-resources-limited) (mineralresources.com.au)<br>A leading diversified resources company operating in lithium, iron ore, energy, and mining services in Western Australia, known for innovation and strong performance | Mining | 🇦🇺 Osborne Park | 4,163 | 1993 |
| 32 | [Nine](https://www.tamtam.ai/c/nine) (nineforbrands.com.au)<br>Largest Australian media company with assets in TV, print, digital, radio, and subscription video, delivering trusted news and entertainment content. | Broadcast Media Production and Distribution | 🇦🇺 North Sydney | 4,106 |  |
| 33 | [BOQ Group](https://www.tamtam.ai/c/boq-group) (boq.com.au)<br>A group of challenger brands that provide genuine banking alternatives, focused on building trust with customers, exploring staff potential, and creating social impact in communities | Financial Services | 🇦🇺 Newstead | 3,973 | 1874 |
| 34 | [SSI](https://www.tamtam.ai/c/ssi-sydney) (ssi.org.au)<br>Providing life-changing human and social services, empowering diverse communities to participate fully in Australia's economic and social life. | Non-profit Organizations | 🇦🇺 Sydney | 3,803 | 2000 |
| 35 | [Asahi Beverages](https://www.tamtam.ai/c/asahi-beverages) (asahi.com.au)<br>Production and distribution of a wide range of alcoholic and non-alcoholic beverages including soft drinks, juices, beers, and spirits. | Food and Beverage Services | 🇦🇺 Southbank | 3,646 |  |
| 36 | [EVT - Entertainment \| Ventures \| Travel](https://www.tamtam.ai/c/evt-entertainment-ventures-travel) (evt.com)<br>A company in the entertainment industry offering cinema experiences, bars and restaurants, as well as travel experiences with a focus on authenticity and local feel | Entertainment Providers | 🇦🇺 Sydney | 3,627 | 1910 |
| 37 | [Healius Limited](https://www.tamtam.ai/c/healius-limited) (healius.com.au)<br>Provides affordable, accessible specialty diagnostic and pathology services across Australia through extensive laboratories and patient collection centers. | Hospitals and Health Care | 🇦🇺 Sydney | 3,531 |  |
| 38 | [Corporate Travel Management (CTM) Group](https://www.tamtam.ai/c/corporate-travel-management-ctm-group) (travelctm.com)<br>A global provider of travel management solutions for corporate, events, leisure, loyalty, and wholesale travel, backed by award-winning tools and exceptional service | Travel Arrangements | 🇦🇺 Brisbane | 3,478 |  |
| 39 | [Glencore Australia](https://www.tamtam.ai/c/glencore-australia) (glencore.ws)<br>Leading Australian natural resource producer supplying coal, copper, zinc, nickel, and cobalt globally for energy, steel-making, and transitioning to a low-carbon future | Mining | 🇦🇺 Sydney | 3,294 |  |
| 40 | [Macmahon](https://www.tamtam.ai/c/macmahon) (macmahon.com.au)<br>An ASX-listed mining services company with expertise in both surface and underground mining, focusing on strong client relationships, safety, and sustainability | Mining | 🇦🇺 Perth | 3,292 | 1963 |
| 41 | [SEEK](https://www.tamtam.ai/c/seek) (au.seek.com)<br>Global leader in employment marketplaces with platforms connecting millions of candidates with hirers worldwide, offering diverse career opportunities in multiple countries | Technology, Information and Internet | 🇦🇺 Cremorne | 3,164 | 1997 |
| 42 | [WiseTech Global](https://www.tamtam.ai/c/wisetech-global) (wisetechglobal.com)<br>Provides cloud software enabling complex logistics operations management for global freight forwarders and third-party logistics providers worldwide. | Software Development | 🇦🇺 Alexandria | 3,063 | 1994 |
| 43 | [Spotlight Retail Group (SRG)](https://www.tamtam.ai/c/spotlight-retail-group-srg) (spotlightgroup.com)<br>A retail group operating iconic Australian brands in craft, home interiors, outdoor adventure, department store, and outdoor apparel with shared values | Retail | 🇦🇺 South Melbourne | 2,936 |  |
| 44 | [DuluxGroup](https://www.tamtam.ai/c/duluxgroup) (duluxgroup.com.au)<br>Manufacture and market products that protect, maintain, and enhance living and working spaces through trusted brands and innovation. | Manufacturing | 🇦🇺 Clayton | 2,781 | 1918 |
| 45 | [Reece Group](https://www.tamtam.ai/c/reece-group) (group.reece.com)<br>A leading distributor of plumbing, waterworks, and HVAC-R products with over 800 branches in Australia, New Zealand, and the United States | Wholesale Building Materials | 🇦🇺 Cremorne | 2,773 | 1920 |
| 46 | [Fairfax Media](https://www.tamtam.ai/c/fairfax-media) (nineforbrands.com.au)<br>provides news, digital content, radio, events, marketing, property services, and entertainment across Australia and New Zealand markets | Online Audio and Video Media | 🇦🇺 Sydney | 2,710 |  |
| 47 | [Greencross Pet Wellness Company](https://www.tamtam.ai/c/greencross-pet-wellness-company) (petbarn.com.au)<br>A leading pet care retailer with over 230 stores in Australasia, offering pet food, accessories, grooming, veterinary services, and pet adoption | Retail | 🇦🇺 North Ryde | 2,687 |  |
| 48 | [Accent Group Limited](https://www.tamtam.ai/c/accent-group-limited) (accentgr.com.au)<br>Retail and distribution of footwear and apparel across Australia and New Zealand with over 850 stores and exclusive brand rights. | Retail | 🇦🇺 Richmond | 2,661 |  |
| 49 | [Energy Queensland](https://www.tamtam.ai/c/energy-queensland) (energyq.com.au)<br>Energy Queensland powers communities across Queensland by effectively managing the state's electricity network, minimizing costs, and supporting regional growth and development | Utilities | 🇦🇺 Newstead | 2,632 | 2016 |
| 50 | [Lendi Group](https://www.tamtam.ai/c/lendi-group)<br>A fast-growing Australian fintech transforming the home loan industry through innovative technology to provide seamless property financing experiences for all | Financial Services | 🇦🇺 Sydney | 2,619 | 2021 |
| 51 | [Treasury Wine Estates](https://www.tamtam.ai/c/treasury-wine-estates) (tweglobal.com)<br>Crafting and sharing exceptional wines globally, managing iconic brands, vineyards, and fostering memorable wine experiences worldwide. | Beverage Manufacturing | 🇦🇺 Melbourne | 2,578 |  |
| 52 | [JBS Australia Pty Limited](https://www.tamtam.ai/c/jbs-australia-pty-limited) (jbsfoodsgroup.com)<br>Leading Australian meat processor with advanced facilities, producing beef, lamb, pork products, exporting globally and serving domestic markets. | Food and Beverage Manufacturing | 🇦🇺 Wacol | 2,432 |  |
| 53 | [Byrnecut](https://www.tamtam.ai/c/byrnecut) (byrnecut.com)<br>Internationally renowned specialist in underground mining contracting, offering a comprehensive range of services with skilled operators and state-of-the-art equipment | Mining | 🇦🇺 Perth Airport | 2,358 | 1987 |
| 54 | [Sonic Healthcare](https://www.tamtam.ai/c/sonic-healthcare) (sonichealthcare.com)<br>Internationally renowned healthcare provider specializing in pathology, radiology, and primary care with operations in multiple countries and a focus on quality medical diagnostic services | Hospitals and Health Care | 🇦🇺 Sydney | 2,328 | 1987 |
| 55 | [MSS Security](https://www.tamtam.ai/c/mss-security) (msssecurity.com.au)<br>A leading security group providing services nationally to government, corporate, and commercial clients with expertise, innovation, and specialized experience | Security and Investigations | 🇦🇺 Parramatta | 2,327 | 1896 |
| 56 | [Harbour Energy](https://www.tamtam.ai/c/harbour-energy) (harbourenergy.com)<br>A leading oil and gas corporation, publicly traded on the London Stock Exchange, specializing in independent operations within the industry | Oil and Gas | 🇦🇺 Victoria | 2,324 |  |
| 57 | [Cash Converters](https://www.tamtam.ai/c/cash-converters) (cashconverters.com)<br>Providing subprime loans and selling secondhand goods, supporting customers with financial solutions and affordable products across Australia. | Retail | 🇦🇺 Perth | 2,264 | 1984 |
| 58 | [Foxtel Group](https://www.tamtam.ai/c/foxtel-group) (foxtelgroup.com.au)<br>A technology-led streaming company with world-class entertainment and sporting content, offering seamless digital experiences for over 46 million subscribers | Entertainment Providers | 🇦🇺 Artarmon | 2,224 |  |
| 59 | [RACQ](https://www.tamtam.ai/c/racq) (racq.com.au)<br>Queensland's largest member-owned organization providing a wide range of services including motoring, insurance, banking, and travel, while supporting the community | Financial Services | 🇦🇺 Brisbane | 2,220 | 1905 |
| 60 | [ABN Group](https://www.tamtam.ai/c/abn-group) (abngroup.com.au)<br>Leading Australian group providing home design, construction, land development, finance, and related services with strong community and quality focus. | Building Construction | 🇦🇺 Leederville | 2,096 | 1978 |
| 61 | [CSR Limited](https://www.tamtam.ai/c/csr-limited) (csr.com.au)<br>A leading manufacturer of trusted building products in Australia and New Zealand, with diverse brands and a focus on sustainability and growth | Wholesale Building Materials | 🇦🇺 North Ryde | 2,053 | 1855 |
| 62 | [Future Group](https://www.tamtam.ai/c/future-group) (futuregroup.com.au)<br>A leading ethical investment company focusing on superannuation, advocating for a sustainable and equitable world while supporting various industries and demographics | Financial Services | 🇦🇺 Sydney | 2,038 |  |
| 63 | [Bega Group](https://www.tamtam.ai/c/bega-group) (begagroup.com.au)<br>Manufacturing and distributing iconic Australian food products including spreads, dairy, beverages, servicing supermarkets, schools, hospitals, and convenience outlets nationwide. | Food and Beverage Manufacturing | 🇦🇺 Bega | 1,973 | 1899 |
| 64 | [Austal](https://www.tamtam.ai/c/austal) (austal.com)<br>A global shipbuilder that designs, constructs, and sustains advanced commercial and defence vessels, with a focus on aluminium shipbuilding and international projects | Shipbuilding | 🇦🇺 Henderson | 1,937 | 1988 |
| 65 | [Junior Adventures Group](https://www.tamtam.ai/c/junior-adventures-group) (junioradventuresgroup.com)<br>A global collective providing enrichment and care for children through specialized programs in the Outside School Hours Care sector | Education Administration Programs | 🇦🇺 Camberwell | 1,909 |  |
| 66 | [G8 Education Ltd](https://www.tamtam.ai/c/g8-education-ltd) (g8education.edu.au)<br>A leading provider of early learning education and care, focused on creating foundations for lifelong learning through innovative teaching methods and supportive environments | Education Administration Programs | 🇦🇺 Varsity Lakes | 1,901 | 2006 |
| 67 | [NGM Group](https://www.tamtam.ai/c/ngm-group) (ngmgroup.com.au)<br>A leading financial institution in the Hunter region, proudly customer-owned, with over 1,600 employees and $20 billion in assets Delivering award-winning banking services to Australians | Banking | 🇦🇺 Newcastle | 1,881 | 2023 |
| 68 | [CAR Group](https://www.tamtam.ai/c/car-group) (cargroup.com)<br>A global leader in digital marketplaces for vehicles, offering innovative technology and advertising solutions to enhance the buying and selling experience worldwide | Technology, Information and Internet | 🇦🇺 Cremorne | 1,718 |  |
| 69 | [Vocus Group Limited](https://www.tamtam.ai/c/vocus-group-limited) (vocusgroup.com.au)<br>Provider of telecommunications infrastructure in Australia and New Zealand with a focus on simplicity, reliability, and automation to meet customer connectivity needs | Telecommunications | 🇦🇺 Melbourne | 1,714 |  |
| 70 | [Envest](https://www.tamtam.ai/c/envest) (envest.com.au)<br>Focused insurance distribution business that leverages people power to deliver creative solutions for customers and partners, proudly part of the Ardonagh Group | Financial Services | 🇦🇺 Brisbane City | 1,705 | 2016 |
| 71 | [Goodman](https://www.tamtam.ai/c/goodman) (goodman.com)<br>Global property group developing and managing sustainable properties near consumers, focusing on long-term relationships with customers and partners worldwide Flexibility to adapt to local needs | Real Estate | 🇦🇺 Sydney | 1,693 |  |
| 72 | [Scenic - Luxury Cruises & Tours](https://www.tamtam.ai/c/scenic-luxury-cruises-and-tours) (scenic.cruises)<br>A luxury travel company offering award-winning river and ocean cruises, as well as handcrafted land journeys to destinations worldwide | Travel Arrangements | 🇦🇺 Sydney | 1,684 | 1986 |
| 73 | [Costa](https://www.tamtam.ai/c/costa) (costagroup.com.au)<br>Leading Australian supplier of premium fresh fruit and vegetables, including avocados, bananas, berries, citrus, grapes, mushrooms, and tomatoes Also offers logistics and wholesale services | Farming | 🇦🇺 Ravenhall | 1,672 | 1937 |
| 74 | [Hansen Technologies](https://www.tamtam.ai/c/hansen-technologies) (hansencx.com)<br>provides mission-critical software and expertise to energy, water, and telecommunications industries enabling innovation, new services, and regulatory compliance worldwide. | Software Development | 🇦🇺 Melbourne | 1,662 | 1971 |
| 75 | [Talent](https://www.tamtam.ai/c/talent) (talentinternational.com)<br>Connects experts in technology and transformation with companies. Focuses on building skilled teams and rethinking tech solutions, delivering value through a people-first approach. | Staffing and Recruiting | 🇦🇺 Sydney | 1,608 | 1995 |
| 76 | [The Arnott's Group](https://www.tamtam.ai/c/the-arnott-s-group) (arnotts.com)<br>A leading food company in the Asia Pacific region with iconic brands, offering quality products created locally to consumers worldwide | Manufacturing | 🇦🇺 North Strathfield | 1,602 |  |
| 77 | [LMG](https://www.tamtam.ai/c/lmg-sydney) (lmg.broker)<br>LMG is the largest aggregator group in Australia and New Zealand, supporting brokers and advisers to help customers settle loans with various lenders | Financial Services | 🇦🇺 Sydney | 1,510 | 1994 |
| 78 | [Newmont Australia](https://www.tamtam.ai/c/newmont-australia) (newmont.com)<br>A global gold producer with operations on four continents, including in Australia Included in S&P 500 and Fortune 500, with a focus on sustainability | Mining | 🇦🇺 Subiaco | 1,504 | 1921 |
| 79 | [Murdoch Children's Research Institute (MCRI)](https://www.tamtam.ai/c/murdoch-children-s-research-institute-mcri) (mcri.edu.au)<br>Leading child health research institute in Australia, dedicated to preventing and treating childhood conditions through research, clinical care, and genetic testing | Research Services | 🇦🇺 Melbourne | 1,490 | 1989 |
| 80 | [CFC Group](https://www.tamtam.ai/c/cfc-group) (cfc.com.au)<br>A values-driven investment group with a diverse portfolio in transport, construction, mining, utilities, and property development, supporting partners for success | Business Consulting and Services | 🇦🇺 Perth | 1,420 |  |
| 81 | [EBOS MedTech](https://www.tamtam.ai/c/ebos-medtech) (ebosmedtech.com)<br>A company in Asia Pacific that specializes in developing life-changing medical technology | Medical Equipment Manufacturing | 🇦🇺 Sydney | 1,404 | 2022 |
| 82 | [Integral Diagnostics (IDX)](https://www.tamtam.ai/c/integral-diagnostics-idx) (integraldiagnostics.com.au)<br>Leading provider of medical imaging services in Australia and New Zealand, delivering state-of-the-art diagnostic services through multiple clinics and hospital sites | Hospitals and Health Care | 🇦🇺 Melbourne | 1,398 |  |
| 83 | [IPH Limited](https://www.tamtam.ai/c/iph-limited) (iphltd.com.au)<br>An international group providing intellectual property services through a network of leading IP firms and an online trademark application platform | Law Practice | 🇦🇺 Sydney | 1,394 | 2014 |
| 84 | [Quantium](https://www.tamtam.ai/c/quantium) (quantium.com)<br>Innovative analytics and data science company, harnessing the power of data to drive transformation and unlock opportunities for individuals, organizations, and society | IT Services and IT Consulting | 🇦🇺 Eveleigh | 1,380 | 2002 |
| 85 | [Perpetual Limited](https://www.tamtam.ai/c/perpetual-limited) (perpetual.com.au)<br>Providing asset management, wealth management, and trustee services to clients across Australia, Asia, Europe, UK, and the United States. | Financial Services | 🇦🇺 Sydney | 1,309 | 1886 |
| 86 | [McMillan Shakespeare (MMSG)](https://www.tamtam.ai/c/mcmillan-shakespeare-mmsg) (mmsg.com.au)<br>A diverse company providing employee benefits, fleet management, and disability support, with a focus on making complex matters simple and putting people first | Financial Services | 🇦🇺 Melbourne | 1,248 | 1988 |
| 87 | [Hutchinson Builders](https://www.tamtam.ai/c/hutchinson-builders) (hutchinsonbuilders.com.au)<br>A multi-generational family business in construction fostering a culture of relationships, investing in people, community support, diversity, and career opportunities | Construction | 🇦🇺 Brisbane | 1,248 | 1912 |
| 88 | [Lycopodium](https://www.tamtam.ai/c/lycopodium) (lycopodium.com)<br>Australian engineering consultancy specializing in project management across various industries, prioritizing client objectives, quality services, and growth through organic expansion and strategic acquisitions | Professional Services | 🇦🇺 Perth | 1,239 | 1992 |
| 89 | [Eagers Automotive Limited](https://www.tamtam.ai/c/eagers-automotive-limited) (eagersautomotive.com.au)<br>A family-owned automotive business with roots dating back to 1913, specializing in vehicle assembly, distribution, and retailing, now leading the industry in Australia | Retail | 🇦🇺 Newstead | 1,231 | 1913 |
| 90 | [AusGroup - AGC \| MAS](https://www.tamtam.ai/c/ausgroup-agc-mas) (altrad.com.au)<br>An experienced project and asset services provider offering fabrication, construction, maintenance, scaffolding, industrial coatings, and specialty services to various industries | Construction | 🇦🇺 Subiaco | 1,202 |  |
| 91 | [Kinetic](https://www.tamtam.ai/c/kinetic-melbourne) (wearekinetic.com)<br>A global transport network operator providing bus and rail services in multiple countries, committed to sustainability, diversity, and community impact | Ground Passenger Transportation | 🇦🇺 Melbourne | 1,168 |  |
| 92 | [Cardno](https://www.tamtam.ai/c/cardno) (stantec.com)<br>A company has rebranded to Stantec Follow the Stantec page for updates | Design Services | 🇦🇺 Fortitude Valley | 1,155 |  |
| 93 | [Aveng](https://www.tamtam.ai/c/aveng) (aveng.co.za)<br>A global company with expertise in engineering, manufacturing, mining, concessions, public infrastructure, and water treatment through its subsidiaries | Construction | 🇦🇺 Richmond | 1,151 | 1889 |
| 94 | [Blackmores Group](https://www.tamtam.ai/c/blackmores-group) (blackmores.com.au)<br>Leader in natural health solutions since 1932, connecting people to nature's healing power through high-quality products and a commitment to sustainability | Wellness and Fitness Services | 🇦🇺 Warriewood | 1,148 | 1932 |
| 95 | [Hydro Tasmania](https://www.tamtam.ai/c/hydro-tasmania) (hydro.com.au)<br>Leading renewable energy provider with hydropower legacy, electricity retail, and hydropower consulting driving Australia's clean energy transition. | Renewable Energy Power Generation | 🇦🇺 Hobart | 1,139 | 1914 |
| 96 | [Intrepid Group](https://www.tamtam.ai/c/intrepid-group) (intrepidgroup.travel)<br>Global leader in sustainable adventure travel, offering unique experiences in over 120 countries while promoting social and environmental responsibility | Travel Arrangements | 🇦🇺 Melbourne | 1,121 |  |
| 97 | [HUB24 Limited](https://www.tamtam.ai/c/hub24-limited) (hub24.com.au)<br>Provider of integrated wealth management platforms, SMSF software, and client portal technology enhancing financial advice delivery and client collaboration. | Financial Services | 🇦🇺 Sydney | 1,079 |  |
| 98 | [Snowy Hydro](https://www.tamtam.ai/c/snowy-hydro) (snowyhydro.com.au)<br>Supply electricity to over one million customers, operate hydro, gas, diesel power stations, and develop renewable wind and solar projects. | Utilities | 🇦🇺 Cooma | 1,064 | 2002 |
| 99 | [MMA Offshore](https://www.tamtam.ai/c/mma-offshore) (cyanrenewables.com)<br>Specializes in high-specification vessel provision and marine/subsea services for offshore energy and maritime industries, cautioning against phishing schemes | Maritime Transportation | 🇦🇺 Perth | 1,042 | 1982 |
| 100 | [PanAust](https://www.tamtam.ai/c/panaust) (panaust.com.au)<br>A copper and gold producer with operations in Laos, Papua New Guinea, and Chile, focused on sustainability, growth, and responsible mining practices | Mining | 🇦🇺 Brisbane | 1,041 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

## More company lists in Australia

- [The largest companies in Australia](https://www.tamtam.ai/l/largest-companies-australia) (5,556)
- [Multinational companies in Australia](https://www.tamtam.ai/l/multinational-companies-australia) (1,184)
- [Retail chains in Australia](https://www.tamtam.ai/l/retail-chains-australia) (577)
- [Financial services firms in Australia](https://www.tamtam.ai/l/financial-services-firms-australia) (483)
- [Critical infrastructure operators in Australia](https://www.tamtam.ai/l/critical-infrastructure-operators-australia) (450)
- [Education providers in Australia](https://www.tamtam.ai/l/education-companies-australia) (402)
- [Healthcare providers in Australia](https://www.tamtam.ai/l/healthcare-providers-australia) (397)
- [Professional services firms in Australia](https://www.tamtam.ai/l/professional-services-firms-australia) (377)
- [Financial Services companies in Australia](https://www.tamtam.ai/l/financial-services-companies-australia) (373)
- [Government Administration companies in Australia](https://www.tamtam.ai/l/government-administration-companies-australia) (351)
- [Public sector organisations in Australia](https://www.tamtam.ai/l/public-sector-organisations-australia) (326)
- [Manufacturers in Australia](https://www.tamtam.ai/l/manufacturers-australia) (320)
- [Companies with a mobile app in Australia](https://www.tamtam.ai/l/companies-with-mobile-app-australia) (305)
- [Publicly traded companies in Australia](https://www.tamtam.ai/l/publicly-traded-companies-australia) (299)
- [Hospitals and Health Care companies in Australia](https://www.tamtam.ai/l/hospitals-and-health-care-companies-australia) (297)
- [E-commerce companies in Australia](https://www.tamtam.ai/l/ecommerce-companies-australia) (247)
- [Retail companies in Australia](https://www.tamtam.ai/l/retail-companies-australia) (243)
- [Companies with in-house R&D in Australia](https://www.tamtam.ai/l/r-and-d-companies-australia) (235)
- [IT Services and IT Consulting companies in Australia](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-australia) (215)
- [Consulting firms in Australia](https://www.tamtam.ai/l/consulting-firms-australia) (210)
- [Non-profit Organizations companies in Australia](https://www.tamtam.ai/l/non-profit-organizations-companies-australia) (190)
- [Hotel and hospitality groups in Australia](https://www.tamtam.ai/l/hospitality-groups-australia) (188)
- [Construction companies in Australia](https://www.tamtam.ai/l/construction-companies-australia) (186)
- [SaaS companies in Australia](https://www.tamtam.ai/l/saas-companies-australia) (186)

## The same list elsewhere in Australia

- [Corporate groups and holding companies in New South Wales](https://www.tamtam.ai/l/holding-companies-new-south-wales) (101)
- [Corporate groups and holding companies in Victoria](https://www.tamtam.ai/l/holding-companies-victoria) (89)
- [Corporate groups and holding companies in Queensland](https://www.tamtam.ai/l/holding-companies-queensland) (37)
- [Corporate groups and holding companies in Western Australia](https://www.tamtam.ai/l/holding-companies-western-australia) (29)
- [Corporate groups and holding companies in Sydney](https://www.tamtam.ai/l/holding-companies-sydney) (57)
- [Corporate groups and holding companies in Melbourne](https://www.tamtam.ai/l/holding-companies-melbourne) (38)

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Source: https://www.tamtam.ai/l/holding-companies-australia