These Australian companies primarily operate in telecommunications, software development, and media. They include large established groups like Telstra, which provides technology and content solutions, and Optus, a telecom company offering mobile and internet services. The list also features significant software firms such as Atlassian, known for tools like Jira and Confluence, and Canva, a visual communications platform.
A notable pattern is the concentration of headquarters in Sydney, which hosts several of the largest companies including Telstra, Atlassian, and TAL Australia, a life insurance specialist. Other major players include Nine, a media company, and Fitness and Lifestyle Group, which offers health and fitness solutions. This suggests Sydney is a key hub for these subscription-based businesses.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Telstratelstra.com.au
Providing technology and content solutions for a connected future, with a focus on customer experience and Australia's largest mobile network |
35,493 | |||
| 2 |
Atlassianatlassian.com
A global team creating tools like Jira, Confluence, Bitbucket, and Trello to empower teams worldwide to collaborate effectively and innovate |
21,044 | |||
| 3 | 16,615 | ||||
| 4 |
Optusoptus.com.au
A leading Australian telecom company offering mobile, internet, entertainment, and business services to over 10 million customers with advanced technology and network coverage |
11,040 | |||
| 5 |
Fitness and Lifestyle Groupfitlg.com
Leading fitness, health, and wellness group offering innovative physical and digital health and fitness solutions to help people live healthier lives |
4,386 | |||
| 6 |
Ninenineforbrands.com.au
Largest Australian media company with assets in TV, print, digital, radio, and subscription video, delivering trusted news and entertainment content. |
4,106 | |||
| 7 |
Seven West Mediasevenwestmedia.com.au
Prominent Australian media company with market-leading broadcast television, digital platforms, publishing, and content production, reaching over 19 million people monthly |
3,119 | |||
| 8 | 2,990 | ||||
| 9 |
Ambulance Victoriaambulance.vic.gov.au
Providing emergency medical transport, pre-hospital care, and air ambulance services to help maintain life and reduce injuries in Victoria |
2,897 | |||
| 10 |
TAL Australiatal.com.au
A leading life insurance specialist in Australia, protecting over 5 million customers through various channels and part of the Dai-ichi Life Group |
2,802 | |||
| 11 |
Greencross Pet Wellness Companypetbarn.com.au
A leading pet care retailer with over 230 stores in Australasia, offering pet food, accessories, grooming, veterinary services, and pet adoption |
2,687 | |||
| 12 |
RACVracv.com.au
A diverse organization offering competitive remuneration and career opportunities in areas like hospitality, financial services, public policy, and more |
2,602 | |||
| 13 |
Foxtel Groupfoxtelgroup.com.au
A technology-led streaming company with world-class entertainment and sporting content, offering seamless digital experiences for over 46 million subscribers |
2,224 | |||
| 14 |
RACQracq.com.au
Queensland's largest member-owned organization providing a wide range of services including motoring, insurance, banking, and travel, while supporting the community |
2,220 | |||
| 15 |
The NRMAmynrma.com.au
A member-owned organization focused on providing value and great experiences for over 27 million members in various industries, fostering diversity and innovation |
2,036 | |||
| 16 | 1,904 | ||||
| 17 |
Chartered Accountants Australia and New Zealandcharteredaccountantsanz.com
Representation and support for over 136,000 financial professionals to make a difference through expertise, ethical standards, education, and advocacy on a global scale |
1,869 | |||
| 18 |
Employment Heroemploymenthero.com
all-in-one platform supporting recruitment, HR, compliance, and payroll to help businesses manage and empower their employees effectively |
1,835 | |||
| 19 |
Outsourced Doersoutsourceddoers.com
Outsourced Doers provides virtual marketing assistants to entrepreneurs globally, helping them save time and grow their businesses cost-effectively |
1,821 | |||
| 20 |
Vocusvocus.com.au
Provides extensive fibre network and diverse connectivity solutions including subsea cables, private networks, and satellite services across Australia. |
1,801 | |||
| 21 |
TPGtpg.com.au
Leading provider of fixed broadband and communication services in Australia, offering NBN, ADSL2+, Fibre Optic, mobile plans, and networking solutions with own infrastructure and submarine cable connectivity |
1,747 | |||
| 22 |
CAR Groupcargroup.com
A global leader in digital marketplaces for vehicles, offering innovative technology and advertising solutions to enhance the buying and selling experience worldwide |
1,718 | |||
| 23 |
RAC WArac.com.au
Providing diverse products and services to over one million members, focusing on community benefit and reinvestment in Western Australia. |
1,678 | |||
| 24 |
HCF Australiahcf.com.au
A leading Australian not-for-profit health fund providing quality cover and healthcare solutions, prioritizing member care, innovation, and employee well-being |
1,620 | |||
| 25 |
CPA Australiacpaaustralia.com.au
A professional organization offering education, training, support, and advocacy for finance and accounting professionals to prepare them for a globalized world |
1,555 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
Goodlife Health Clubsgoodlife.com.au
A leading Australian gym network established in 2002, with 86 full-service health clubs nationwide offering industry-leading programs and flexible membership options |
1,548 | |||
| 27 |
TechnologyOnetechnology1.com
Providing deeply integrated enterprise SaaS software solutions to corporations, government agencies, councils, and universities across multiple countries. |
1,548 | |||
| 28 |
Dodo Servicesdodo.com
Provider of telecommunications, energy, and insurance services focused on competitive pricing, customer choice, and delivering great value in Australia. |
1,526 | |||
| 29 | 1,507 | ||||
| 30 |
Secure Parkingsecureparking.com.au
A leading service provider in parking solutions, part of a global organization, focused on innovative technology and customer satisfaction, with a strong company culture and values |
1,500 | |||
| 31 |
Engineers Australiaengineersaustralia.org.au
Global organization representing diverse engineering professionals, shaping a sustainable world with around 100,000 members in Australia across all disciplines |
1,357 | |||
| 32 |
OPSMopsm.com.au
Specializing in eye care and eyewear retail, this company has over 9,000 stores worldwide and partners with luxury brands like Ray Ban and Prada |
1,331 | |||
| 33 |
SiteMindersiteminder.com
Specializes in software platforms for hotels, maximizing revenue potential and offering management solutions for small accommodation providers Headquarters in Sydney with global presence |
1,274 | |||
| 34 |
RAAraa.com.au
A trusted provider of motor, home, and travel products and services in South Australia, offering peace of mind to over 815,000 members |
1,198 | |||
| 35 |
Blackmores Groupblackmores.com.au
Leader in natural health solutions since 1932, connecting people to nature's healing power through high-quality products and a commitment to sustainability |
1,148 | |||
| 36 |
Brennanbrennanit.com.au
An Australian systems integrator with operations in Australia and Asia, serving over 1,400 customers with a focus on digital transformation |
1,059 | |||
| 37 |
Australian Institute of Company Directorsaicd.com.au
strengthening society through world-class governance, assisting individuals to become better directors, and helping directors stay ahead of what's next. |
1,043 | |||
| 38 | 
Bupa Australiabupa.com.au
International healthcare provider offering aged care, dental, optical, and health insurance services while focusing on sustainable wellbeing and planet health for all Australians. |
1,039 | |||
| 39 |
Aussie Broadbandaussiebroadband.com.au
A growing internet service provider in Australia, offering high-quality internet services with a focus on customer satisfaction, local support, and community impact |
1,015 | |||
| 40 |
Influxinflux.com
Providing consistent, high-quality, on-demand customer support services worldwide using a follow-the-sun model for any timezone. |
993 | |||
| 41 |
Football Australiafootballaustralia.com.au
Governing body of football in Australia, member of FIFA, with membership based on Australia's federated system of government |
954 | |||
| 42 |
Culture Ampcultureamp.com
Provides an employee experience platform, transforming engagement, performance management, and developing high-performing teams for over 7,500 companies. |
954 | |||
| 43 |
Envatoenvato.com
A global online creative community providing tools, assets, and opportunities for creators to thrive, with a focus on sustainability and inclusive work culture |
939 | |||
| 44 |
Eucalyptuseucalyptus.health
Digital healthcare platform offering telehealth services for men's health, fertility, dermatology, weight loss, and menopause, with a focus on high-quality care and patient safety |
888 | |||
| 45 |
Isentiaisentia.com
Leading media intelligence company in Asia-Pacific, providing insights on brand reputation since 1982 Acquired by Access Intelligence in 2021 for global expansion |
881 | |||
| 46 |
Servcorpservcorp.com
Servcorp offers flexible workspace solutions including hot desks, dedicated desks, virtual offices, and office spaces in over 150 locations worldwide |
880 | |||
| 47 |
ACS (Australian Computer Society)acs.org.au
This company is a professional association for Australia's technology sector, focusing on fostering community, developing skills, guiding careers, and supporting skilled technology migrants |
856 | |||
| 48 |
SafetyCulturesafetyculture.com
A mobile-first operations platform for safety, compliance, and operational excellence, offering tools for inspections, issue resolution, asset management, and team training on-the-go |
847 | |||
| 49 |
iiNetiinet.net.au
An Australian ISP offering ADSL2+ and nbn™ services with a focus on customer service and passion for connecting Australians better |
829 | |||
| 50 |
SAI Globalinfostore.saiglobal.com
Provider of global standards, technical information, and regulations supporting operational efficiency, business growth, and market entry for organizations. |
825 | |||
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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 5,556
- Multinational companies in Australia 1,184
- Retail chains in Australia 577
- Financial services firms in Australia 483
- Critical infrastructure operators in Australia 450
- Education providers in Australia 402
- Healthcare providers in Australia 397
- Professional services firms in Australia 377
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- Government Administration companies in Australia 351
- Public sector organisations in Australia 326
- Manufacturers in Australia 320
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- Non-profit Organizations companies in Australia 190
- Hotel and hospitality groups in Australia 188
- Construction companies in Australia 186