| # | Company | Employees |
|---|---|---|
| 1 |
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 |
| 2 |
ACT Governmentact.gov.au
Coordination of multiple government directorates providing health, education, infrastructure, justice, and community services for the ACT region. |
8,010 |
| 3 |
Services Australiaservicesaustralia.gov.au
Delivering Medicare, Centrelink, and Child Support payments and services to beneficiaries |
7,882 |
| 4 |
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 |
| 5 |
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 |
| 6 |
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 |
| 7 |
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 |
| 8 |
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 |
| 9 |
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 |
| 10 |
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 |
| 11 |
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 |
| 12 |
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 |
| 13 |
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 |
| 14 |
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 |
| 15 |
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 |
| 16 |
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 |
| 17 |
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 |
| 18 |
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 |
| 19 |
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 |
| 20 |
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 |
| 21 |
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 |
| 22 |
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 |
| 23 |
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 |
| 24 |
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 |
| 25 |
Commonwealth Ombudsmanombudsman.gov.au
An independent organization addressing complaints about Australian Government agencies and select private industries, remaining neutral and unbiased |
150 |
| 26 |
Australian Governmentmy.gov.au
A federal parliamentary constitutional monarchy governing Australia comprised of executive, legislative, and judicial branches |
150 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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.