# Multinational companies headquartered in Western Australia
Tamtam tracks 75 multinational companies headquartered in Western Australia. This list ranks the 50 largest by number of employees on LinkedIn, led by Curtin University, The University of Western Australia and Woodside Energy. Their median headcount is 1,126. Half of them were founded in 1988 or later. The most common headquarters are Perth (27) and West Perth (2).
These are large multinational companies in Western Australia. The list includes several higher education institutions such as Curtin University, which has campuses in multiple countries, and The University of Western Australia, an Australian research university. Other prominent companies include Woodside Energy, an oil and gas operator, and Monadelphous, an engineering group providing construction and maintenance services.
The data shows a strong presence of the higher education and mining sectors. Companies like South32 and Macmahon specialize in natural resource development and mining services. A significant number of these companies, including Navitas, a global education provider, and St John of God Health Care, a health care provider, are headquartered in Perth, indicating a concentration of large enterprises in the capital city.
π¦πΊ Western Australia Β· 50 companies Β· Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Curtin University](https://www.tamtam.ai/c/curtin-university) (curtin.edu.au)
An internationally focused university with campuses in multiple countries, connecting students to industries and organizations globally, emphasizing real-world issues and job readiness | Higher Education | π¦πΊ Bentley | 9,451 | |
| 2 | [The University of Western Australia](https://www.tamtam.ai/c/the-university-of-western-australia) (uwa.edu.au)
An Australian research university known for excellence, innovation, and enterprise, located on a picturesque campus in Perth along the Swan River | Higher Education | π¦πΊ Perth | 8,751 | 1911 |
| 3 | [Woodside Energy](https://www.tamtam.ai/c/woodside-energy) (woodside.com)
Operate diversified oil and gas assets globally with focus on safety, efficiency, environmental performance, and growth in gas, oil, and new energy sectors. | Oil and Gas | π¦πΊ Perth | 5,933 | 1954 |
| 4 | [Monadelphous](https://www.tamtam.ai/c/monadelphous) (monadelphous.com.au)
An ASX-200 engineering group in Australia, providing construction, maintenance, and industrial services to the resources, energy, and infrastructure sectors | Construction | π¦πΊ Perth | 5,712 | 1972 |
| 5 | [South32](https://www.tamtam.ai/c/south32) (south32.net)
Specializing in developing natural resources, we aim to enhance lives for present and future generations, trusted to unlock resource potential | Mining | π¦πΊ Perth | 5,267 | 2014 |
| 6 | [Edith Cowan University](https://www.tamtam.ai/c/edith-cowan-university) (ecu.edu.au)
A leading Australian university offering a wide range of undergraduate and postgraduate programs across various disciplines, including cyber security and indigenous education | Higher Education | π¦πΊ Joondalup | 5,091 | 1991 |
| 7 | [Navitas](https://www.tamtam.ai/c/navitas) (navitas.com)
Global education provider offering a wide range of educational services, creating opportunities for learners, and fostering partnerships to improve learning outcomes worldwide | Higher Education | π¦πΊ Perth | 5,048 | |
| 8 | [St John of God Health Care](https://www.tamtam.ai/c/st-john-of-god-health-care) (sjog.org.au)
A leading provider of high-quality health care and community services in Australia and New Zealand, focusing on healing, hope, and dignity for all | Hospitals and Health Care | π¦πΊ Perth | 4,826 | 1895 |
| 9 | [APM](https://www.tamtam.ai/c/apm) (apm.net.au)
Global health and human services company with over 14,500 employees in 11 countries, empowering individuals to achieve better lives through support and services | Health and Human Services | π¦πΊ Perth | 4,658 | |
| 10 | [Murdoch University](https://www.tamtam.ai/c/murdoch-university) (murdoch.edu.au)
A global university in Western Australia offering inclusive education, research, and innovation to students and staff from around the world | Higher Education | π¦πΊ Perth | 3,750 | |
| 11 | [Macmahon](https://www.tamtam.ai/c/macmahon) (macmahon.com.au)
An ASX-listed mining services company with expertise in both surface and underground mining, focusing on strong client relationships, safety, and sustainability | Mining | π¦πΊ Perth | 3,292 | 1963 |
| 12 | [SRG Global](https://www.tamtam.ai/c/srg-global) (srgglobal.com.au)
A diversified industrial services provider offering asset maintenance, mining services, engineering, and construction solutions to solve complex problems in major industries | Construction | π¦πΊ Perth | 2,514 | 1961 |
| 13 | [Byrnecut](https://www.tamtam.ai/c/byrnecut) (byrnecut.com)
Internationally renowned specialist in underground mining contracting, offering a comprehensive range of services with skilled operators and state-of-the-art equipment | Mining | π¦πΊ Perth Airport | 2,358 | 1987 |
| 14 | [Cash Converters](https://www.tamtam.ai/c/cash-converters) (cashconverters.com)
Providing subprime loans and selling secondhand goods, supporting customers with financial solutions and affordable products across Australia. | Retail | π¦πΊ Perth | 2,264 | 1984 |
| 15 | [Northern Star Resources Limited](https://www.tamtam.ai/c/northern-star-resources-limited) (nsrltd.com)
A global-scale Australian gold producer with high-quality mines in Australia and North America, focused on maximizing shareholder returns through acquisitions and exploration | Mining | π¦πΊ Subiaco | 2,163 | 2003 |
| 16 | [INPEX Australia](https://www.tamtam.ai/c/inpex-australia) (inpex.com.au)
A leading oil and gas exploration company in Australia, involved in major projects like Ichthys LNG, with a strong focus on growth and success | Oil and Gas | π¦πΊ Perth | 2,160 | |
| 17 | [Austal](https://www.tamtam.ai/c/austal) (austal.com)
A global shipbuilder that designs, constructs, and sustains advanced commercial and defence vessels, with a focus on aluminium shipbuilding and international projects | Shipbuilding | π¦πΊ Henderson | 1,937 | 1988 |
| 18 | [Clough](https://www.tamtam.ai/c/clough) (cloughgroup.com)
A pioneering project delivery organization that delivers high performing assets for energy, resources, and infrastructure industries with a focus on innovation and sustainability | Construction | π¦πΊ Perth | 1,855 | 1919 |
| 19 | [RSM Australia](https://www.tamtam.ai/c/rsm-australia) (rsm.global)
A member of a global network providing assurance, tax, and consulting services with a client-centric approach and deep understanding of businesses | Accounting | π¦πΊ Perth | 1,841 | 1922 |
| 20 | [Barminco](https://www.tamtam.ai/c/barminco) (barminco.com.au)
An international leader in hard rock underground mining, focusing on safety, service, and value for clients through proven expertise and methods | Mining | π¦πΊ Perth | 1,776 | 1989 |
| 21 | [Newmont Australia](https://www.tamtam.ai/c/newmont-australia) (newmont.com)
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 | π¦πΊ Subiaco | 1,504 | 1921 |
| 22 | [Mader Group](https://www.tamtam.ai/c/mader-group-perth-airport) (madergroup.com.au)
A global provider of technical services in mining, energy, and industrial sectors, optimizing fleet and plant performance with a dedicated team | Mining | π¦πΊ Perth Airport | 1,427 | 2005 |
| 23 | [Perseus Mining Limited](https://www.tamtam.ai/c/perseus-mining-limited) (perseusmining.com)
An African-focused gold production, development, and exploration company with projects in Ghana and CΓ΄te dβIvoire aiming to become a multi-mine gold producer in West Africa | Mining | π¦πΊ Subiaco | 1,356 | 2004 |
| 24 | [Lycopodium](https://www.tamtam.ai/c/lycopodium) (lycopodium.com)
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 | π¦πΊ Perth | 1,239 | 1992 |
| 25 | [WBHO Infrastructure](https://www.tamtam.ai/c/wbho-infrastructure) (wbho.com.au)
An international specialist group focused on engineering-led asset maintenance, mining services, and infrastructure solutions | Civil Engineering | π¦πΊ Subiaco | 1,126 | |
| 26 | [VGW](https://www.tamtam.ai/c/vgw) (vgw.co)
Development and operation of free-to-play online social games with optional in-game purchases and sweepstakes for real prizes. | Entertainment Providers | π¦πΊ Perth | 1,121 | 2010 |
| 27 | [MMA Offshore](https://www.tamtam.ai/c/mma-offshore) (cyanrenewables.com)
Specializes in high-specification vessel provision and marine/subsea services for offshore energy and maritime industries, cautioning against phishing schemes | Maritime Transportation | π¦πΊ Perth | 1,042 | 1982 |
| 28 | [Robert Bird Group](https://www.tamtam.ai/c/robert-bird-group) (robertbird.com)
Provides structural, civil, and construction engineering consultancy services, creating value for clients through innovative application of engineering science and planning for construction. | Construction | π¦πΊ Brisbane | 912 | 1982 |
| 29 | [Iluka Resources](https://www.tamtam.ai/c/iluka-resources) (iluka.com)
Global critical minerals company specializing in exploration, mining, processing, and marketing of zircon, titanium feedstocks, and rare earth elements. | Mining | π¦πΊ Perth | 895 | |
| 30 | [Empired](https://www.tamtam.ai/c/empired) (empired.com)
The company provides IT services and solutions to improve productivity, empower staff, and automate business processes for organizations of all sizes and industries | IT Services and IT Consulting | π¦πΊ Perth | 851 | |
| 31 | [Calibre](https://www.tamtam.ai/c/calibre) (wsp.com)
A global engineering firm offering design, engineering, advisory, and environmental services with expertise in EPCM project delivery and major capital projects | Mining | π¦πΊ Perth | 834 | 1993 |
| 32 | [iiNet](https://www.tamtam.ai/c/iinet) (iinet.net.au)
An Australian ISP offering ADSL2+ and nbnβ’ services with a focus on customer service and passion for connecting Australians better | Telecommunications | π¦πΊ Perth | 829 | |
| 33 | [Primero](https://www.tamtam.ai/c/primero) (primero.com.au)
A multidisciplinary engineering group specializing in design, construction, and operation of global resource projects, offering turnkey solutions, maintenance services, and BOO solutions | Mining | π¦πΊ Osborne Park | 821 | 2011 |
| 34 | [Contract Resources Pty Ltd](https://www.tamtam.ai/c/contract-resources-pty-ltd) (contractresources.com)
Specializing in industrial services, this company focuses on safety, environmental sustainability, and total solution delivery for heavy process industries worldwide | Oil and Gas | π¦πΊ Perth | 815 | 1989 |
| 35 | [Thermomix in Australia](https://www.tamtam.ai/c/thermomix-in-australia) (thermomix.com.au)
Design and delivery of innovative kitchen appliances and home care technology, enabling Australians to cook fresh, healthy meals easily. | Retail | π¦πΊ Balcatta | 718 | 2001 |
| 36 | [Menzies Aviation](https://www.tamtam.ai/c/menzies-aviation) (menziesaviation.com)
The company provides tailored landside and airside services at over 200 airport locations worldwide, including ground handling, cargo, fuelling, and executive services | Airlines and Aviation | π¦πΊ Perth Airport | 687 | 1833 |
| 37 | [Austin Engineering Ltd](https://www.tamtam.ai/c/austin-engineering-ltd) (austineng.com)
Global provider of complex engineering mining solutions worldwide, designing, building, and supporting customised solutions for leading mining companies across six continents | Mining | π¦πΊ Kewdale | 664 | |
| 38 | [Five Group Pty Ltd](https://www.tamtam.ai/c/five-group-pty-ltd) (thefivegroup.com.au)
A group of engineering, surveying, and architectural drafting companies operating in Australia and South East Asia with subsidiaries in various specialized areas | Construction | π¦πΊ Balcatta | 642 | |
| 39 | [St Barbara Limited](https://www.tamtam.ai/c/st-barbara-limited) (stbarbara.com.au)
An Australian ASX listed company with gold mining operations in Canada and Papua New Guinea | Mining | π¦πΊ Perth | 637 | 1969 |
| 40 | [Lynas Rare Earths Ltd](https://www.tamtam.ai/c/lynas-rare-earths-ltd) (lynasrareearths.com)
A leading producer of separated Rare Earths with a high-grade mine in Australia and the world's largest processing plant in Malaysia Currently building a new processing facility | Mining | π¦πΊ Perth | 620 | |
| 41 | [RSC](https://www.tamtam.ai/c/rsc) (rscmme.com)
Global geological services company offering practical solutions from exploration to remediation, prioritizing client needs, team well-being, and integrity in all operations | Mining | π¦πΊ Perth | 619 | 2008 |
| 42 | [Resolute Mining Limited](https://www.tamtam.ai/c/resolute-mining-limited) (rml.com.au)
Experienced explorer and developer operating gold mines in Mali and Senegal, utilizing advanced automation systems to produce millions of ounces of gold. | Mining | π¦πΊ Perth | 608 | |
| 43 | [Land Surveys](https://www.tamtam.ai/c/land-surveys) (landsurveys.net.au)
A leading survey company providing comprehensive services across Australia and internationally, utilizing the latest technology to achieve high quality results | Surveying and Mapping Services | π¦πΊ Belmont | 594 | 1997 |
| 44 | [Powertech](https://www.tamtam.ai/c/powertech) (powertech.com.au)
Engineering and technical services specializing in electrical solutions for mining, oil and gas, renewables, infrastructure, and defense projects Rental and maintenance of testing equipment available | Engineering Services | π¦πΊ Malaga | 588 | 1998 |
| 45 | [Dome Cafe Group](https://www.tamtam.ai/c/dome-cafe-group) (domecoffees.com)
A multinational cafΓ© group with over 60 locations in Australia and 100 locations globally, providing a welcoming environment for all, offering coffee and food | Hospitality | π¦πΊ Maylands | 571 | 1993 |
| 46 | [RCT - Powered by Epiroc](https://www.tamtam.ai/c/rct-powered-by-epiroc) (rct-global.com)
Innovative smart technology company designing, manufacturing, and delivering custom solutions for mining, industrial, agricultural, and civil sectors globally | Mining | π¦πΊ Kewdale | 541 | 1972 |
| 47 | [Hofmann Engineering Pty Ltd](https://www.tamtam.ai/c/hofmann-engineering-pty-ltd) (hofmannengineering.com)
Provider of specialist engineered parts and services for mining, defence, transport, and energy industries worldwide Focus on research, development, and manufacturing across multiple countries | Mechanical Or Industrial Engineering | π¦πΊ Bassendean | 484 | 1969 |
| 48 | [Capricorn](https://www.tamtam.ai/c/capricorn) (capricorn.coop)
Support small automotive businesses with financial products, trade accounts, supplier connections, risk protection, events, and rewards programs across Australia and New Zealand. | Financial Services | π¦πΊ West Perth | 478 | 1974 |
| 49 | [West African Resources](https://www.tamtam.ai/c/west-african-resources) (westafricanresources.com)
Newest unhedged gold producer in West Africa, with a successful gold pour at Sanbrado Gold Project in Burkina Faso in March 2020 | Mining | π¦πΊ Subiaco | 477 | 2007 |
| 50 | [Moodle](https://www.tamtam.ai/c/moodle) (moodle.com)
A trusted online learning solution with a customizable open source platform used by millions worldwide, offering services, expertise, and resources to empower educators | E-Learning Providers | π¦πΊ West Perth | 473 | 2001 |
## 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 Western Australia
- [The largest companies in Western Australia](https://www.tamtam.ai/l/largest-companies-western-australia) (475)
- [Mining companies in Western Australia](https://www.tamtam.ai/l/mining-companies-western-australia) (80)
- [Government Administration companies in Western Australia](https://www.tamtam.ai/l/government-administration-companies-western-australia) (46)
- [Publicly traded companies in Western Australia](https://www.tamtam.ai/l/publicly-traded-companies-western-australia) (45)
- [Critical infrastructure operators in Western Australia](https://www.tamtam.ai/l/critical-infrastructure-operators-western-australia) (42)
- [Healthcare providers in Western Australia](https://www.tamtam.ai/l/healthcare-providers-western-australia) (37)
- [Public sector organisations in Western Australia](https://www.tamtam.ai/l/public-sector-organisations-western-australia) (37)
- [Professional services firms in Western Australia](https://www.tamtam.ai/l/professional-services-firms-western-australia) (37)
- [Education providers in Western Australia](https://www.tamtam.ai/l/education-companies-western-australia) (34)
- [Hospitals and Health Care companies in Western Australia](https://www.tamtam.ai/l/hospitals-and-health-care-companies-western-australia) (31)
- [Companies with in-house R&D in Western Australia](https://www.tamtam.ai/l/r-and-d-companies-western-australia) (30)
- [Construction companies in Western Australia](https://www.tamtam.ai/l/construction-companies-western-australia) (29)
- [Corporate groups and holding companies in Western Australia](https://www.tamtam.ai/l/holding-companies-western-australia) (29)
- [Manufacturers in Western Australia](https://www.tamtam.ai/l/manufacturers-western-australia) (26)
- [Retail chains in Western Australia](https://www.tamtam.ai/l/retail-chains-western-australia) (25)
## The same list elsewhere in Australia
- [Multinational companies in Australia](https://www.tamtam.ai/l/multinational-companies-australia) (1,184)
- [Multinational companies in New South Wales](https://www.tamtam.ai/l/multinational-companies-new-south-wales) (512)
- [Multinational companies in Victoria](https://www.tamtam.ai/l/multinational-companies-victoria) (378)
- [Multinational companies in Queensland](https://www.tamtam.ai/l/multinational-companies-queensland) (134)
- [Multinational companies in South Australia](https://www.tamtam.ai/l/multinational-companies-south-australia) (36)
- [Multinational companies in Sydney](https://www.tamtam.ai/l/multinational-companies-sydney) (279)
- [Multinational companies in Melbourne](https://www.tamtam.ai/l/multinational-companies-melbourne) (162)
- [Multinational companies in Brisbane](https://www.tamtam.ai/l/multinational-companies-brisbane) (41)
- [Multinational companies in Perth](https://www.tamtam.ai/l/multinational-companies-perth) (39)
- [Multinational companies in North Sydney](https://www.tamtam.ai/l/multinational-companies-north-sydney) (36)
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Source: https://www.tamtam.ai/l/multinational-companies-western-australia