| # | Company | Employees |
|---|---|---|
| 1 |
Australian Public Servicecontent.apsjobs.gov.au
The Australian Public Service provides policy advice and manages programs to make a difference in Australia, aiming to be representative and influential |
23,580 |
| 2 |
Australian Governmentmy.gov.au
Curating official news, updates, and advice from the Australian Government to inform and support the public |
10,557 |
| 3 |
Australian Taxation Officeato.gov.au
Provide tax and superannuation information, answer general questions, promote security, encourage respectful community engagement, and support career opportunities. |
9,508 |
| 4 |
ACT Governmentact.gov.au
Coordination of multiple government directorates providing health, education, infrastructure, justice, and community services for the ACT region. |
8,010 |
| 5 |
Services Australiaservicesaustralia.gov.au
Delivering Medicare, Centrelink, and Child Support payments and services to beneficiaries |
7,882 |
| 6 |
Australian Armyadfcareers.gov.au
A versatile and modern fighting force that protects national interests, provides humanitarian aid, and offers unique career opportunities in various roles |
7,710 |
| 7 |
The Australian National Universityanu.edu.au
Leading national institution for research and education excellence featuring world-class staff and facilities on a vast parkland campus for global learning. |
7,653 |
| 8 |
Royal Australian Navynavy.gov.au
Modern military organization operating advanced vessels and aircraft, defending national interests, performing maritime duties, and engaging in peacetime activities |
5,604 |
| 9 |
Australian Government Department of Health, Disability and Ageinghealth.gov.au
The Department of Health in Australia works to improve health and wellbeing for all Australians through evidence-based policies, programs, and partnerships |
4,714 |
| 10 |
Department of Employment and Workplace Relationsdewr.gov.au
The company enables access to quality skills, training, and employment to support Australians find secure work in fair, productive, and safe workplaces |
3,251 |
| 11 |
Airservices Australiaairservicesaustralia.com
Air traffic control, aviation rescue, firefighting, telecommunications, and navigation services managing significant Australian airspace and supporting aviation safety. |
2,488 |
| 12 |
Department of Industry, Science and Resourcesindustry.gov.au
Government department supporting Australian economic growth through innovation, STEM investment, and resource sector strengthening Overseeing various entities in critical industries and policy areas |
2,242 |
| 13 |
Australian Government Department of Educationeducation.gov.au
This department of the Australian Government focuses on promoting quality education, skills, and employment opportunities to create a prosperous and inclusive Australia |
1,943 |
| 14 |
Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Artsinfrastructure.gov.au
This official Australian government department provides policy advice, programs, services, and regulation for infrastructure, transport, communications, arts, regions, cities, and territories |
1,725 |
| 15 |
ACT Education Directorateact.gov.au
Delivering education services through 87 government schools and registering non-government schools in Canberra, Australia's national capital |
1,723 |
| 16 |
ACCCaccc.gov.au
Promoting fair competition, protecting consumer rights, offering small business advice, and stopping anti-competitive behavior Providing job opportunities within the agency |
1,485 |
| 17 |
Department of the Prime Minister and Cabinetpmc.gov.au
Provide high-quality advice to government leaders, coordinate national policies, lead public service in policy development and program delivery. |
1,385 |
| 18 |
Australian Federal Policeafp.gov.au
Progressive law enforcement organization focused on fighting 21st century crime through prevention, deterrence, partnerships, and innovation at national and global levels |
1,248 |
| 19 |
Australian Government Department of Financefinance.gov.au
An integral part of the Australian Public Service, specializing in financial management, providing services, advice, and supporting staff development and wellbeing for employees |
1,119 |
| 20 |
Australian Department of Home Affairshomeaffairs.gov.au
Responsible for immigration, border security, national security, emergency management, counter-terrorism, cybersecurity, multicultural affairs, and critical infrastructure protection across Australia and globally. |
1,072 |
| 21 |
Australian Government Department of Veterans'β Affairslinktr.ee
An Australian government agency providing support, pensions, healthcare, rehabilitation, and commemorations for veterans, defense personnel, war widows/widowers, police, and more |
1,065 |
| 22 |
Royal Flying Doctor Service of Australiaflyingdoctor.org.au
A national health organization providing primary healthcare and emergency services in remote Australia utilizing advanced aviation and medical technology |
991 |
| 23 |
Civil Aviation Safety Authoritycasa.gov.au
Regulation of civil aviation safety, pilot licensing, aircraft registration, airspace administration, and promotion of aviation safety awareness in Australia. |
880 |
| 24 |
Deloitte Legaldeloittelegal.com
A global network of legal professionals providing strategic business advice, corporate guidance, and efficient legal solutions for clients worldwide |
876 |
| 25 |
Scyne Advisoryscyne.com.au
Provides independent advisory services to support public sector projects and governments in Australia, focusing on resilience, security, equity, and prosperity |
807 |
| 26 |
National Indigenous Australians Agencyniaa.gov.au
The National Indigenous Australians Agency supports First Nations peoples in Australia by influencing policy, fostering partnerships, and delivering programs and services |
736 |
| 27 |
Geoscience Australiaga.gov.au
Provide scientific expertise and technology to understand Australia's geology and geography, supporting national opportunities and challenges with diverse partnerships. |
727 |
| 28 |
Comcarecomcare.gov.au
A partner in promoting workplace health and safety, implementing government policies, ensuring timely compensation for injured workers, and supporting those with asbestos-related diseases |
707 |
| 29 |
UNSW Canberraunsw.edu.au
An academic institution offering undergraduate and graduate programs in Arts, Business, Engineering, Science, and Technology, as well as research opportunities |
692 |
| 30 |
National Health and Medical Research Council (NHMRC)nhmrc.gov.au
NHMRC drives research funding, health guidelines, and ethical standards to improve health outcomes by providing evidence-based advice for Australians |
646 |
| 31 | 546 | |
| 32 |
Australian Institute of Health and Welfare (AIHW)aihw.gov.au
An independent national agency provides reliable health and welfare information to improve Australians' wellbeing and inform policy decisions |
535 |
| 33 |
Commonwealth Superannuation Corporationcsc.gov.au
Providing retirement planning, expert advice, and support services tailored to Australian Public Service and Defence Force employees' superannuation needs. |
516 |
| 34 |
National Library of Australialibrary.gov.au
The organization collects, preserves, and provides access to national and international resources, supporting learning, creativity, and Australia's cultural heritage |
493 |
| 35 |
Australian Air Force Cadetsairforcecadets.gov.au
A youth development organization affiliated with the Royal Australian Air Force, fostering initiative, leadership, discipline, and self-reliance among young people |
423 |
| 36 |
ActewAGLactewagl.com.au
A local Australian energy provider committed to empowering customers with energy solutions, expert advice, and support for the Canberra region |
419 |
| 37 |
National Emergency Management Agencynema.gov.au
Providing support and resources for communities during emergencies, while also focusing on disaster preparedness for the future in Australia |
415 |
| 38 |
Synergy Groupsynergygroup.net.au
A pragmatic consulting firm that collaborates with clients to deliver success through transformation, creative solutions, and lasting partnerships in Australia |
402 |
| 39 |
NAATInaati.com.au
The company is a standards organization that promotes high professional standards in interpreting and translating, issuing credentials for practitioners in Australia |
399 |
| 40 |
Murray-Darling Basin Authoritymdba.gov.au
An independent agency partnering with governments and communities to manage the Murray-Darling Basin for a healthy, working environment through water resource management opportunities |
380 |
| 41 |
Sport Australiagov.au
Sport Australia is a government entity promoting sports and high performance through strategic direction, resource allocation, policy-making, and school-based participation programs |
356 |
| 42 |
Northrop Grumman Australianorthropgrumman.com
A leading provider of autonomous, C4ISR, cyber, logistics and strike systems in Australia, focused on innovation, job creation, and technology leadership |
356 |
| 43 |
Clean Energy Regulatorcer.gov.au
An Australian Government body focused on accelerating carbon abatement efforts, providing updates on the latest news and career opportunities |
353 |
| 44 |
National Museum of Australianma.gov.au
A social history museum exploring Australia's land, nation, and people through Indigenous histories, European settlement, and environmental interactions |
339 |
| 45 |
Australian Army Cadetsarmycadets.gov.au
Youth organization offering military training and adventurous activities for ages 13-19, fostering courage, initiative, teamwork, and respect in Australia |
334 |
| 46 |
Australian Financial Security Authority (AFSA)afsa.gov.au
This agency in the Attorney-General's portfolio administers personal insolvency, proceeds of crime, trustee services, and the Personal Property Securities Register |
333 |
| 47 |
National Archives of Australianaa.gov.au
Preserving Australian Government records, promoting good records management, and providing access to the national archival collection for understanding heritage and democracy |
314 |
| 48 |
Diabetes Australiadiabetesaustralia.com.au
National organization supporting individuals with diabetes, focusing on leadership, prevention, management, and research to reduce the impact of the disease in Australia |
314 |
| 49 |
National Gallery of Australianga.gov.au
National art museum housing over 160,000 artworks, hosting major exhibitions, supporting education, research, and inspiring cultural appreciation. |
309 |
| 50 |
Electro Optic Systemseos-aus.com
An Australian technology firm specializing in defense, space, and communications products Offers advanced optical, laser, and satellite solutions globally |
254 |
| 51 |
Department of Infrastructure, Transport, Cities and Regional Developmentgov.au
This government department oversees infrastructure, transport, regional development, and communications in Australia Terms of use available on their website |
236 |
| 52 |
Jacobs Australia Pty Ltdjacobs.com
A subsidiary of a global engineering group, specializing in providing technical services to Defence sectors with a focus on innovation and opportunity for skilled professionals |
233 |
| 53 |
Open Arms - Veterans & Families Counsellingopenarms.gov.au
Specialized counseling services for current and former ADF personnel and their families, offering 24/7 support, group programs, suicide prevention training, and military culture understanding |
185 |
| 54 |
Woden Community Service (WCS)org.au
Non-profit organization offering a wide range of community services in the Australian Capital Territory, including early learning, aged care, mental health support, and more |
183 |
| 55 |
Evoenergy ACTevoenergy.com.au
A local energy distributor in Canberra, supplying electricity and gas to residential and business customers while working towards a sustainable future |
171 |
| 56 |
Omni Executive Pty Ltdomniexe.com
Australian-owned provider of innovative defense, security, intelligence, and infrastructure solutions, supporting national interests with cutting-edge technology and expertise |
170 |
| 57 |
NTRO - National Transport Research Organisationntro.org.au
NTRO develops new knowledge, innovation, and standards in moving people and freight for Australia and New Zealand across road, rail, ports, and airports |
156 |
| 58 |
YWCA Canberraywca-canberra.org.au
A feminist organization providing essential services and advocacy for women, girls, and families in Canberra, with a focus on community development and youth services |
154 |
| 59 |
Aboriginal Hostels Limitedahl.gov.au
Providing accommodation and support services for First Nations people in Australia to improve their quality of life and economic opportunities |
153 |
| 60 |
Commonwealth Ombudsmanombudsman.gov.au
An independent organization addressing complaints about Australian Government agencies and select private industries, remaining neutral and unbiased |
150 |
| 61 |
Australian Governmentmy.gov.au
A federal parliamentary constitutional monarchy governing Australia comprised of executive, legislative, and judicial branches |
150 |
| 62 |
ITL BioMedicalitlbiomedical.com
Global pioneer in developing and delivering medical devices for blood management and sampling, with a focus on safety, innovation, and reliability |
69 |
| 63 |
Continuity Capital Partnerscontinuitycp.com
Continuity Capital specializes in private markets investments such as private equity, credit, real estate, infrastructure, and natural resources for institutional investors globally |
12 |
| 64 |
Delta Security Solutionsdeltasecurity.com.au
Dedicated security company with experienced professionals providing top-notch security services using the latest technology to keep clients safe and secure |
4 |
| 65 |
HYREA - Hydrogen Renewable Energy Australiahyrea.com.au
The company specializes in producing green hydrogen on-site and on-demand from inorganic materials to overcome transportation and storage barriers |
1 |
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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 Oct 9, 2026.