| # | Company | Employees |
|---|---|---|
| 1 |
Department of Justicejustice.wa.gov.au
Provider of justice, legal, and corrective services supporting the Western Australian Government, judiciary, Parliament, and community through high-quality products and information |
3,866 |
| 2 |
Department of Communities WAwa.gov.au
A major human services department in Western Australia focusing on supporting individual, family, and community wellbeing through various services and functions |
3,302 |
| 3 |
Public Transport Authoritypta.wa.gov.au
Responsible for metropolitan rail, bus, ferry services, regional transport, school bus assistance, infrastructure planning, and innovative capital projects. |
2,188 |
| 4 |
Department of Primary Industries & Regional Developmentdpird.wa.gov.au
Dedicated to sustaining Western Australia's agriculture, food industry, and aquatic resources, while fostering prosperous regional communities and economies |
1,733 |
| 5 |
Main Roads Western Australiamainroads.wa.gov.au
Planning, building, and maintaining a vast state road network across Western Australia, collaborating with partners and supporting diverse road users. |
1,423 |
| 6 |
Department of Housing and Worksdohw.wa.gov.au
Central government agency overseeing building projects, procurement, revenue laws, and property management in Western Australia, driving policy, strategy, and community outcomes |
1,339 |
| 7 |
Department of Local Government, Industry Regulation and Safety (LGIRS)wa.gov.au
Promoting safety, fairness, and responsibility in Western Australia's community, energy, and resources sector through various departments employing over 1,800 people |
1,243 |
| 8 |
Department of Water and Environmental Regulationwa.gov.au
Promoting the health of Western Australia's water resources and environment to support a sustainable economy and thriving communities |
899 |
| 9 |
City of Stirling (Western Australia)stirling.wa.gov.au
The organization in Stirling offers a wide range of services and programs across diverse suburbs, emphasizing employee well-being and inclusivity |
856 |
| 10 |
Department of the Premier and Cabinet of WAwa.gov.au
The Department of the Premier and Cabinet in Western Australia provides policy advice, administrative support, and services to the government and community, focusing on policy management and government services |
765 |
| 11 |
Department of Biodiversity, Conservation and Attractionsdbca.wa.gov.au
Promoting biodiversity and conservation, managing ecosystems and attractions in Western Australia, and providing excellent customer service aligned with strategic priorities |
744 |
| 12 |
Department of Planning, Lands and Heritagewa.gov.au
Manages land for Western Australian government, overseeing planning, supply chain, administration, asset management, heritage preservation, and Aboriginal lands |
731 |
| 13 |
Public Sector Commissionwa.gov.au
This organization shapes, builds, and regulates the public sector in Western Australia to tackle public policy challenges and better serve the community |
701 |
| 14 |
City of Wanneroowanneroo.wa.gov.au
A local government authority with a fast-growing population, serving urban, rural, and coastal areas while focusing on customer service and community prosperity |
651 |
| 15 |
Disability Serviceswa.gov.au
Join us at the Department of Communities for the latest news and job opportunities, as we aim to make a positive impact on society |
640 |
| 16 |
City of Swanswan.wa.gov.au
Urban and rural local government area in Perth, with diverse demographics and growing economy supporting a population increase and various industries |
599 |
| 17 |
City of Albanyalbany.wa.gov.au
Albany in Western Australia manages a diverse regional local government, balancing needs of residents and businesses for a sustainable and unique community |
585 |
| 18 |
Agriculture and Food | DPIRDgov.au
Agriculture and Food division of a government department supporting Western Australia's primary industries and regional development |
536 |
| 19 |
City of Joondalupjoondalup.wa.gov.au
Local government providing innovative programs, managing coastal and urban areas, promoting sustainable lifestyles, and fostering community engagement in northern Perth suburbs. |
505 |
| 20 |
Landgatelandgate.wa.gov.au
Landgate is the guardian of property ownership in Western Australia, providing secure land titles, valuation services, location information, and dividend returns to the state |
495 |
| 21 |
City of Mandurahmandurah.wa.gov.au
The City of Mandurah offers diverse job opportunities in a growing coastal city, promoting work/life balance and community contribution in Western Australia |
487 |
| 22 |
City of Canningcanning.wa.gov.au
Local government in Perth's south-eastern suburbs with a culturally diverse population, focusing on community services and development |
470 |
| 23 |
City of Melvillemelvillecity.com.au
The City of Melville provides diverse services and infrastructure to enhance community well-being, sustainability, and economic prosperity for future generations |
435 |
| 24 |
City of Cockburncockburn.wa.gov.au
A dynamic and growing community offering diverse lifestyles, vibrant surroundings, and a range of recreational and cultural amenities in Perth's southern suburbs |
435 |
| 25 |
Department of Treasury and Finance WAwa.gov.au
Government economic and financial policy advisor in Western Australia, managing public sector finances, formulating budgets, and providing expert advice for public interest |
423 |
| 26 |
RWWArwwa.com.au
We support and promote the Western Australian racing industry, highlighting its economic, social, and community benefits |
419 |
| 27 |
Housing Authority WAwa.gov.au
The company provides affordable housing solutions, rental assistance, and quality homes for government employees in Western Australia through strategic partnerships and initiatives |
394 |
| 28 |
Department of Training and Workforce Developmentwa.gov.au
Supporting Western Australia's community and workforce through vocational education, skills development, and Jobs and Skills WA Partnering with employers for a skilled workforce |
390 |
| 29 |
Lotterywestlotterywest.wa.gov.au
This company operates a responsible and sustainable lottery in Western Australia, raising funds to support hospitals, sports, arts, and community groups |
376 |
| 30 |
City of Armadalemy.armadale.wa.gov.au
The company is located in the City of Armadale, a rapidly growing regional metropolitan center offering diverse housing options and attractive investment opportunities |
371 |
| 31 |
City of Gosnellsgosnells.wa.gov.au
A local government in Western Australia, the City of Gosnells provides a range of services and facilities to its population of over 124,000 residents |
346 |
| 32 |
City of Karrathakarratha.wa.gov.au
Enhancing the social, cultural, economic, and environmental well-being of the City of Karratha through community leadership and local government services |
341 |
| 33 |
City of Bayswaterbayswater.wa.gov.au
The company provides a range of services to support a vibrant and diverse community, including libraries, recreational facilities, environmental initiatives, and health services |
314 |
| 34 |
City of Fremantlefremantle.wa.gov.au
A local government authority in Perth, Western Australia, providing services, managing festivals, and promoting sustainable practices in the vibrant city of Fremantle |
295 |
| 35 |
City of Vincentvincent.wa.gov.au
The City of Vincent is a vibrant local government in Western Australia, providing a diverse and thriving community for residents, visitors, and businesses |
199 |
| 36 |
City of South Perthsouthperth.wa.gov.au
A local government entity in South Perth, overseeing a unique area with a population of 44,098 residents and a charming, popular environment |
184 |
| 37 |
NOPSEMAnopsema.gov.au
An independent regulator in Australia overseeing health, safety, and environmental management for offshore petroleum facilities in Commonwealth waters |
179 |
| 38 |
City of Belmont WAbelmont.wa.gov.au
Local government area in Western Australia, offering opportunities in centrally located suburbs along the Swan River with close proximity to Perth's center and transportation |
175 |
| 39 |
City of Nedlandsnedlands.wa.gov.au
The City of Nedlands aims to maintain a harmonious community by providing quality services and infrastructure, fostering social interaction, and preserving its unique character |
170 |
| 40 |
Town of Cambridgecambridge.wa.gov.au
Providing housing, employment, and lifestyle opportunities with focus on community wellbeing, parklands, and quality suburban environments. |
169 |
| 41 |
Westportwestport.wa.gov.au
The Westport Program focuses on delivering a new port facility in Kwinana, WA, to enhance economic growth, transport infrastructure, and job opportunities |
164 |
| 42 |
Shire of Mundaringmundaring.wa.gov.au
Local Government in Perth hills, Western Australia, covering 644 sq km with focus on nature-based tourism, preserving reserves, and enhancing village charm |
163 |
| 43 |
Shire of Serpentine Jarrahdalesjshire.wa.gov.au
A rapidly growing local government in Western Australia, known for its agricultural, rural lifestyle, rich history, stunning scenery, and wildlife abundance |
150 |
| 44 |
Shire of Ashburtonashburton.wa.gov.au
Manages a region with large mines, pastoral leases, cattle stations, fishing industry, and town sites in an arid tropical landscape with over 10,000 residents |
150 |
| 45 |
Shire of East Pilbaraeastpilbara.wa.gov.au
The Shire of East Pilbara is a diverse community located in a rural landscape with economic opportunities, rich heritage, and important mining operations |
148 |
| 46 |
Department of Aboriginal Affairswa.gov.au
This department in Western Australia works with Aboriginal communities and government to improve services and develop policies for sustainable benefits Follow them on Twitter @aboriginal_wa |
146 |
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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 Oct 24, 2026.
More company lists in Western Australia
- The largest companies in Western Australia 437
- Mining companies in Western Australia 77
- Hospitals and Health Care companies in Western Australia 31
- Critical infrastructure operators in Western Australia 29
- Construction companies in Western Australia 27
The same list elsewhere in Australia
- Government Administration companies in Australia 350
- Government Administration companies in New South Wales 82
- Government Administration companies in Victoria 81
- Government Administration companies in Queensland 44
- Government Administration companies in South Australia 31
- Government Administration companies in Canberra 25