| # | Company | Employees |
|---|---|---|
| 1 |
ANZanz.com.au
A banking institution with over 180 years of history, striving to create a sustainable economy for all to thrive and build better lives |
50,843 |
| 2 |
NABnab.com.au
The company is dedicated to serving customers and supporting communities through their banking services, emphasizing on what matters most |
40,896 |
| 3 |
Australia Postauspost.com.au
Connecting businesses with consumers through postal, retail, financial, communications, and etailing services focused on continuous improvement. |
16,807 |
| 4 |
Toll Grouptollgroup.com
Global supply chain and transport services solving logistics challenges for businesses through a network of five hundred sites across twenty-nine distinct markets. |
11,663 |
| 5 |
Alfred Healthalfredhealth.org.au
Leading metropolitan health service providing specialist medical, surgical, trauma, intensive care, research, education, and training across multiple hospital locations. |
5,721 |
| 6 |
Austin Healthaustin.org.au
A healthcare organization focused on improving patients' lives through specialized medical services, wellness initiatives, and career development opportunities for employees |
4,802 |
| 7 |
Insignia Financialinsigniafinancial.com.au
A leading wealth manager in Australia, founded in 1846 to protect families, now offering a range of tailored financial solutions |
4,262 |
| 8 |
Healthscopehealthscope.com.au
A leading private healthcare provider in Australia with 41 hospitals, focusing on quality care and positive clinical outcomes for patients |
4,229 |
| 9 |
Northern Healthnh.org.au
A key provider of public health care in Melbourne's northern region, offering medical, surgical, mental health, and rehabilitation services through four campuses |
4,155 |
| 10 |
Victoria Policepolice.vic.gov.au
Provides 24/7 policing services across Victoria, supported by diverse professionals, ensuring community safety and effective emergency management. |
3,734 |
| 11 |
Metro Trains Melbournemetrotrains.com.au
Operator of Melbourne's suburban railway network, running frequent, high-capacity train services across 16 lines to support city growth. |
3,651 |
| 12 |
Cleanaway Waste Managementcleanaway.com.au
Australia's largest public waste management company, operating in over 250 locations Provides waste collection, recycling, resource recovery, industrial services, and workshop waste solutions |
3,313 |
| 13 |
Spotless Groupdownergroup.com
Provider of various services, now under Downer Group ownership No longer active on social media |
2,551 |
| 14 |
EnergyAustraliaenergyaustralia.com.au
A leading Australian energy company providing practical and sustainable energy solutions, including carbon neutral options, while supporting local communities and indigenous peoples |
2,286 |
| 15 |
Ascianoasciano.com.au
Leading rail and cargo ports operator in Australia and New Zealand, handling vast quantities of commodities and goods to support regional economy |
2,203 |
| 16 |
Transurbantransurban.com
An Australian-owned company developing toll roads, conducting safety research, advocating for sustainable transport, and enhancing community liveability in operating areas |
2,145 |
| 17 |
Australian Energy Market Operator (AEMO)aemo.com.au
Operate Australia's largest gas and electricity markets, provide planning, forecasting, and security advice to ensure energy reliability and security. |
1,921 |
| 18 |
Vocusvocus.com.au
Provides extensive fibre network and diverse connectivity solutions including subsea cables, private networks, and satellite services across Australia. |
1,801 |
| 19 |
CitiPower and Powercorpowercor.com.au
Operate electricity distribution networks serving 1.2 million customers, enabling renewable energy integration, ensuring safety, reliability, and supporting clean energy transition. |
1,752 |
| 20 |
Vocus Group Limitedvocusgroup.com.au
Provider of telecommunications infrastructure in Australia and New Zealand with a focus on simplicity, reliability, and automation to meet customer connectivity needs |
1,714 |
| 21 |
V/Linevline.com.au
Australia's largest regional public transport operator connecting communities through safe, comfortable, and reliable train and coach services, fostering strong stakeholder relationships for community prosperity |
1,573 |
| 22 |
Jemenajemena.com.au
Provider of gas and electricity services with over a century of experience, supplying essential energy to millions of households and businesses |
1,560 |
| 23 |
The Royal Women's Hospitalthewomens.org.au
Specialist women's tertiary hospital in Melbourne, offering maternity, neonatal, gynaecology, and cancer services Promotes diversity, inclusion, and gender equity for employees |
1,540 |
| 24 |
Dodo Servicesdodo.com
Provider of telecommunications, energy, and insurance services focused on competitive pricing, customer choice, and delivering great value in Australia. |
1,526 |
| 25 |
Integral Diagnostics (IDX)integraldiagnostics.com.au
Leading provider of medical imaging services in Australia and New Zealand, delivering state-of-the-art diagnostic services through multiple clinics and hospital sites |
1,398 |
| 26 |
Zinfrazinfra.com.au
Zinfra is a leading delivery partner in Australia's energy infrastructure sector, providing engineering, project management, construction, and maintenance services with a focus on inclusivity and diversity |
1,348 |
| 27 |
Yarra Tramsyarratrams.com.au
A leading provider of public transport in Melbourne, operating the largest tram network in the world, connecting thousands of people daily |
1,184 |
| 28 |
Kineticwearekinetic.com
A global transport network operator providing bus and rail services in multiple countries, committed to sustainability, diversity, and community impact |
1,168 |
| 29 |
CGU Insurancecgu.com.au
Provider of insurance products with over 165 years of experience, working closely with brokers to ensure exceptional service and peace of mind for customers |
1,162 |
| 30 |
UniSuperunisuper.com.au
Australian super fund serving thinkers, creators, and investigators Largest fund with 620,000+ members and $115B in assets, shaping a better future |
1,142 |
| 31 |
AIA Australiaaia.com.au
Specialist in life insurance, health insurance, and wellbeing programs protecting and enhancing millions of Australians' lives and health. |
1,036 |
| 32 | 975 | |
| 33 |
Yarra Valley Wateryvw.com.au
Provide water supply and sewage treatment services to millions, including water recycling for residential and public use across a large area. |
899 |
| 34 | 640 | |
| 35 |
Transdev Australia & New Zealandtransdev.com.au
A leading provider of public transport services in Australia and New Zealand, with a focus on innovation, safety, and customer satisfaction |
634 |
| 36 |
ME Bankmebank.com.au
Aussie bank focusing on making banking more ethical and accessible through low-cost home loans and a full suite of banking services |
626 |
| 37 |
Suburban Rail Loop Authoritybigbuild.vic.gov.au
Leading the largest infrastructure project in Victoria's history, connecting major rail lines in Melbourne to improve transportation and community engagement |
596 |
| 38 |
Simply Energysimplyenergy.com.au
A provider of smart electricity and gas solutions in Australia, committed to making energy simple, affordable, and sustainable through innovation and partnerships |
184 |
| 39 |
Treasury Corporation of Victoriatcv.vic.gov.au
As the central financing authority for the state, we provide tailored loans, financing, advisory, and investment services to government entities |
64 |
Turn this list into pipeline
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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 24, 2026.
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