# The 45 largest publicly traded companies in Western Australia
Tamtam tracks 45 publicly traded companies headquartered in Western Australia. This list ranks all of them by number of employees on LinkedIn, led by Fortescue, Woodside Energy and Monadelphous. Their median headcount is 608. Half of them were founded in 1998 or later. The most common headquarters are Perth (19), West Perth (4) and Osborne Park (3).
These publicly traded companies in Western Australia are predominantly large firms in mining and construction, reflecting the region's strong resources sector. Notable examples include Fortescue, which supplies iron ore and develops green energy, and Woodside Energy, operating diversified oil and gas assets. Monadelphous provides engineering services, while Mineral Resources Limited focuses on lithium, iron ore, and energy.
The data shows a concentration of headquarters in Perth, with companies like South32 specializing in natural resource development and Macmahon providing mining services. Austal, a global shipbuilder, is located in Henderson. The prevalence of mining and construction firms highlights the industrial backbone of Western Australia's economy.
π¦πΊ Western Australia Β· 45 companies Β· Updated Nov 13, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Fortescue](https://www.tamtam.ai/c/fortescue) (fortescue.com)
Supplying global steel industries with iron ore while developing green energy technologies and zero emission solutions to eliminate fossil fuels across operations. | Mining | π¦πΊ East Perth | 10,056 | 2003 |
| 2 | [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 |
| 3 | [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 |
| 4 | [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 |
| 5 | [Mineral Resources Limited](https://www.tamtam.ai/c/mineral-resources-limited) (mineralresources.com.au)
A leading diversified resources company operating in lithium, iron ore, energy, and mining services in Western Australia, known for innovation and strong performance | Mining | π¦πΊ Osborne Park | 4,163 | 1993 |
| 6 | [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 |
| 7 | [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 |
| 8 | [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 |
| 9 | [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 |
| 10 | [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 |
| 11 | [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 |
| 12 | [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 |
| 13 | [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 |
| 14 | [GenusPlus Group](https://www.tamtam.ai/c/genusplus-group) (genus.com.au)
Designs, constructs, maintains critical power and communications infrastructure across Australia, including transmission, substations, renewables, and communication solutions, supporting national development and progress. | Construction | π¦πΊ Belmont | 1,276 | 2018 |
| 15 | [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 |
| 16 | [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 | |
| 17 | [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 | |
| 18 | [Duratec](https://www.tamtam.ai/c/duratec) (duratec.com.au)
Specializing in steel and concrete protection and remediation, offering cost-effective solutions to extend asset life through innovative programs and methodologies | Construction | π¦πΊ Wangara | 873 | |
| 19 | [Westgold Resources Limited](https://www.tamtam.ai/c/westgold-resources-limited) (westgold.com.au)
A Western Australian gold miner with 4 underground mines, 3 processing hubs, and >1400 employees, focused on creating wealth for stakeholders | Mining | π¦πΊ Perth | 855 | 2016 |
| 20 | [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 | |
| 21 | [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 |
| 22 | [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 | |
| 23 | [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 | |
| 24 | [MLG](https://www.tamtam.ai/c/mlg) (mlgoz.com.au)
A founder-led company providing innovative mine site & supply chain solutions to the Australian mining and civil infrastructure industries for over 21 years | Mining | π¦πΊ Kalgoorlie | 568 | 2002 |
| 25 | [Pilbara Minerals Limited](https://www.tamtam.ai/c/pilbara-minerals-limited) (pilbaraminerals.com.au)
Leading ASX-listed pure-play lithium producer with world's largest independent hard-rock lithium operation, focusing on sustainable, low-cost lithium production and supply chain integration | Mining | π¦πΊ West Perth | 554 | |
| 26 | [SCEE Electrical](https://www.tamtam.ai/c/scee-electrical) (sceeelectrical.com.au)
A national provider of electrical services to resources and infrastructure sectors, offering maintenance, instrumentation, communication, and smart energy solutions with proven expertise | Construction | π¦πΊ Perth | 544 | 1978 |
| 27 | [Veris](https://www.tamtam.ai/c/veris) (veris.com.au)
Leading provider of spatial data services in Australia for private and public sectors, delivering innovative solutions through a highly-skilled team | Professional Services | π¦πΊ Perth | 533 | 2006 |
| 28 | [IGO Ltd](https://www.tamtam.ai/c/igo-ltd) (igo.com.au)
An organization focused on discovering, developing, and delivering clean energy products while maintaining a strong culture of caring for people and stakeholders | Mining | π¦πΊ South Perth | 531 | 2000 |
| 29 | [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 |
| 30 | [Bhagwan Marine](https://www.tamtam.ai/c/bhagwan-marine) (bhagwanmarine.com)
A leading marine solutions provider offering offshore, inshore, and subsea services, engineering, civil construction support, and project management across various industries | Maritime | π¦πΊ Perth | 468 | 1998 |
| 31 | [Automotive Holdings Group (AHG)](https://www.tamtam.ai/c/automotive-holdings-group-ahg) (eagersautomotive.com.au)
Leading automotive retail group with over 100 years of history, operating dealerships across Australia and New Zealand offering new/used vehicles, service, parts, and consumer finance | Motor Vehicle Manufacturing | π¦πΊ West Perth | 453 | 1913 |
| 32 | [GR Engineering Services Ltd](https://www.tamtam.ai/c/gr-engineering-services-ltd) (gres.com.au)
An engineering, consulting, and contracting company specializing in fixed-price design and construction services for the resources and mineral processing industries, both locally and internationally | Mining | π¦πΊ Ascot | 447 | 2006 |
| 33 | [DUG](https://www.tamtam.ai/c/dug) (dug.com)
An ASX-listed technology company specializing in analytical software development, big-data services, and high-performance computing, offering innovative solutions and bespoke support globally | Technology, Information and Internet | π¦πΊ West Perth | 444 | |
| 34 | [Emeco Group](https://www.tamtam.ai/c/emeco-group) (emecogroup.com)
The world's largest provider of mining equipment rentals offering tailored solutions to drive productivity and efficiency improvements in the industry | Mining | π¦πΊ Osborne Park | 439 | 1972 |
| 35 | [Pioneer Credit Limited](https://www.tamtam.ai/c/pioneer-credit-limited) (pioneercredit.com.au)
Australian financial services provider specializing in acquiring and servicing retail debt portfolios with a focus on helping customers overcome financial difficulties through outstanding customer service | Financial Services | π¦πΊ Perth | 438 | 1988 |
| 36 | [Vault Minerals](https://www.tamtam.ai/c/vault-minerals) (vaultminerals.com)
An ASX-listed gold mining operation in Australia with a major new gold mine ramping up to full production in Western Australia | Mining | π¦πΊ South Perth | 411 | |
| 37 | [Genesis Minerals Limited](https://www.tamtam.ai/c/genesis-minerals-limited) (genesisminerals.com.au)
Australian gold exploration and mine development company with high quality projects in Western Australia, focused on long-life standalone gold operations and expanding Mineral Resources | Mining | π¦πΊ Perth | 406 | 2008 |
| 38 | [Sandfire](https://www.tamtam.ai/c/sandfire) (sandfire.com.au)
An Australian mining and exploration company focused on safe, consistent, and profitable production, with plans to grow into a globally diversified and sustainable mining company | Mining | π¦πΊ West Perth | 403 | |
| 39 | [Toxfree](https://www.tamtam.ai/c/toxfree) (cleanaway.com.au)
A leading waste management company in Australia providing safe, reliable, and sustainable solutions for commercial, industrial, medical, and hazardous waste | Environmental Services | π¦πΊ Osborne Park | 391 | 2001 |
| 40 | [Regis Resources Ltd](https://www.tamtam.ai/c/regis-resources-ltd) (regisresources.com.au)
A premier gold producer and explorer operating in Australia, with a focus on safe, responsible, and reliable production performance in two project areas | Mining | π¦πΊ Laverton | 327 | 1987 |
| 41 | [Catalyst Metals](https://www.tamtam.ai/c/catalyst-metals) (catalystmetals.com.au)
Canadian gold producer operating the Plutonic Gold operations in Western Australia, including underground and open pit projects with a focus on expanding production | Mining | π¦πΊ Subiaco | 215 | |
| 42 | [Bentley Perth](https://www.tamtam.ai/c/bentley-perth) (perth.bentleymotors.com)
Luxury car lover's paradise in Western Australia, offering authorized sales and service for Bentley vehicles The go-to destination for Bentley enthusiasts | Motor Vehicle Manufacturing | π¦πΊ Nedlands | 35 | 1964 |
| 43 | [Euroz Hartleys Group Limited](https://www.tamtam.ai/c/euroz-hartleys-group-limited) (eurozhartleys.com)
A diversified financial services company offering stockbroking, wealth management, funds management, research, institutional sales, private wealth services, and corporate finance advice | Financial Services | π¦πΊ Perth | 22 | 2000 |
| 44 | [Jobman](https://www.tamtam.ai/c/jobman) (jobman.com)
Versatile job management software for manufacturing projects, handling job creation, costing, ordering, stock control, and staff productivity in real-time Flexible ERP accessible remotely | Software Development | π¦πΊ O'Connor | 16 | |
| 45 | [Alderan Resources](https://www.tamtam.ai/c/alderan-resources) (alderanresources.com.au)
Focused on acquiring and developing advanced copper-gold projects in Utah, USA Listed on ASX | Mining | π¦πΊ Perth | 4 | 2012 |
## 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 13, 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)
- [Multinational companies in Western Australia](https://www.tamtam.ai/l/multinational-companies-western-australia) (75)
- [Government Administration companies in Western Australia](https://www.tamtam.ai/l/government-administration-companies-western-australia) (46)
- [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
- [Publicly traded companies in Australia](https://www.tamtam.ai/l/publicly-traded-companies-australia) (299)
- [Publicly traded companies in New South Wales](https://www.tamtam.ai/l/publicly-traded-companies-new-south-wales) (121)
- [Publicly traded companies in Victoria](https://www.tamtam.ai/l/publicly-traded-companies-victoria) (89)
- [Publicly traded companies in Queensland](https://www.tamtam.ai/l/publicly-traded-companies-queensland) (33)
- [Publicly traded companies in Sydney](https://www.tamtam.ai/l/publicly-traded-companies-sydney) (78)
- [Publicly traded companies in Melbourne](https://www.tamtam.ai/l/publicly-traded-companies-melbourne) (36)
## The same list elsewhere
- [Publicly traded companies in the world](https://www.tamtam.ai/l/publicly-traded-companies-in-the-world) (11,531)
---
Source: https://www.tamtam.ai/l/publicly-traded-companies-western-australia