These Sydney-based multinational companies are primarily large organizations with significant employee numbers. The list features a strong presence of financial services firms, including Commonwealth Bank, a leading provider of financial services in Australia, and Macquarie Group, a global financial services organization. Technology and telecommunications are also well represented, with Telstra focusing on connected solutions and Atlassian creating tools for team collaboration.
A notable characteristic is the prevalence of companies with deep roots, such as Telstra, founded in 1901, and Westpac, established in 1817. While many companies are large and well-established, there are also newer technology firms like Freelancer.com, founded in 2009, connecting users worldwide with projects.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Freelancer.comfreelancer.com
Connecting millions of users worldwide with projects in diverse fields, offering secure payments and specialized freight services. |
91,305 | |||
| 2 |
Commonwealth Bankcommbank.com.au
Leading provider of financial services in Australia, offering banking, funds management, insurance, investment, and sharebroking products to help individuals manage their finances |
47,706 | |||
| 3 |
Worleyworley.com
Global professional services company specializing in energy, chemicals, and resources, providing integrated solutions for project delivery and asset management |
37,425 | |||
| 4 |
Telstratelstra.com.au
Providing technology and content solutions for a connected future, with a focus on customer experience and Australia's largest mobile network |
35,493 | |||
| 5 |
Atlassianatlassian.com
A global team creating tools like Jira, Confluence, Bitbucket, and Trello to empower teams worldwide to collaborate effectively and innovate |
21,044 | |||
| 6 |
Macquarie Groupmacquarie.com
Global financial services organization empowering people to innovate and invest for a better future in 34 markets Visit wwwmacquariecom for more information |
20,757 | |||
| 7 | 17,363 | ||||
| 8 |
Westpacwestpac.com.au
A major banking institution in Australia and New Zealand, offering a wide range of financial services globally with a focus on customer prosperity |
16,224 | |||
| 9 |
Westpac Groupwestpac.com.au
Leading financial institution offering banking, wealth management, and customer-focused services across Australia, Asia, UK, and the US. |
14,973 | |||
| 10 |
QBE Insuranceqbe.com
An international insurer offering commercial, personal, and specialty products in 27 countries to help manage risks and embrace change |
14,280 | |||
| 11 |
IAGiag.com.au
Leading general insurance company in Australia and New Zealand, providing coverage under various brands, supporting communities in preventing and recovering from risks since 1851 |
12,798 | |||
| 12 |
Ramsay Health Careramsayhealth.com
Provider of private hospitals, clinics, mental health, diagnostics, and community care services across multiple countries with extensive healthcare staff. |
11,896 | |||
| 13 |
Ray Whiteraywhite.com
Global leader in real estate with over 120 years' experience, delivering proven results, exceptional leaders, and impeccable customer service Market-leading in all sectors |
9,956 | |||
| 14 |
KPMG Australiakpmg.com.au
Professional services firm offering audit, tax, legal, management consulting, and digital solutions to diverse industries and sectors in Australia. |
9,429 | |||
| 15 |
Macquarie Universitymq.edu.au
A forward-thinking university dedicated to solving real-world problems through collaboration with students, academics, industry, and society |
8,022 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Deloitte Australiadeloitte.com.au
A forward-thinking professional services firm focused on cyber security, virtual reality, digital marketing, and tech integration across various industries, aiming to make a meaningful impact |
7,674 | |||
| 17 |
PwC Australiapwc.com.au
Professional services focused on building trust in society and solving important problems through insights and expertise from people. |
5,636 | |||
| 18 |
LJ Hookerljhooker.com.au
Global real estate franchise offering residential sales, property management, commercial services, and property finance advice across multiple countries. |
4,523 | |||
| 19 |
MUFG Pension & Market Servicesmpms.mufg.com
Connecting people with diverse financial assets through secure, scalable technology platforms, regulatory expertise, and data-driven insights for global clients. |
4,521 | |||
| 20 |
WSP in Australiawsp.com
A leading professional services consulting firm providing technical expertise and strategic advice in various sectors, designing lasting solutions for future generations with integrated digital innovations |
4,487 | |||
| 21 |
EVT - Entertainment | Ventures | Travelevt.com
A company in the entertainment industry offering cinema experiences, bars and restaurants, as well as travel experiences with a focus on authenticity and local feel |
3,627 | |||
| 22 |
LIONlioncareers.com
Production and distribution of beers, wines, spirits, RTDs, and non-alcoholic drinks with focus on diversity, inclusion, and sustainability. |
3,386 | |||
| 23 |
Glencore Australiaglencore.ws
Leading Australian natural resource producer supplying coal, copper, zinc, nickel, and cobalt globally for energy, steel-making, and transitioning to a low-carbon future |
3,294 | |||
| 24 |
Allianz Australiaallianz.com.au
Provider of personal, commercial, and corporate insurance products including general, workers' compensation, and life insurance in Australia and New Zealand. |
3,179 | |||
| 25 |
GenesisCaregenesiscare.com
Provider of integrated cancer care globally, focusing on personalized treatment experiences and access to radiotherapy, diagnostics, oncology, surgery, and clinical trials |
3,134 | |||
| 26 |
Wesfarmers Industrial and Safetywesfarmers.com.au
Leading supplier of industrial and safety products and services in Australia and New Zealand, offering a broad range of solutions for various industries |
3,027 | |||
| 27 |
Fairfax Medianineforbrands.com.au
provides news, digital content, radio, events, marketing, property services, and entertainment across Australia and New Zealand markets |
2,710 | |||
| 28 |
180 Degrees Consulting180dc.org
Global youth-led consultancy for non-profits, governments, and social-conscious organizations, providing consulting services to improve education, reduce homelessness, and alleviate poverty. |
2,365 | |||
| 29 |
Sonic Healthcaresonichealthcare.com
Internationally renowned healthcare provider specializing in pathology, radiology, and primary care with operations in multiple countries and a focus on quality medical diagnostic services |
2,328 | |||
| 30 |
Qubeqube.com.au
Largest integrated provider of import and export logistics services across Australia, New Zealand, and Southeast Asia with extensive supply chain infrastructure. |
2,301 | |||
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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 Nov 11, 2026.
More company lists in Sydney
- The largest companies in Sydney 912
- Financial services firms in Sydney 205
- Financial Services companies in Sydney 143
- Professional services firms in Sydney 93
- Publicly traded companies in Sydney 78
- Retail chains in Sydney 77
- Companies with a mobile app in Sydney 64
- Critical infrastructure operators in Sydney 63
- Investment Management companies in Sydney 60
- Corporate groups and holding companies in Sydney 57
- SaaS companies in Sydney 51
- IT Services and IT Consulting companies in Sydney 49
- Consulting firms in Sydney 47
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- Subscription businesses in Sydney 40
- Education providers in Sydney 39
- Healthcare providers in Sydney 37
- Manufacturers in Sydney 36
- E-commerce companies in Sydney 35
- Venture capital and private equity firms in Sydney 33
- Real Estate companies in Sydney 32
- Retail companies in Sydney 32
- Software Development companies in Sydney 30
- AI companies in Sydney 28
The same list elsewhere in Australia
- Multinational companies in Australia 1,184
- Multinational companies in New South Wales 512
- Multinational companies in Victoria 378
- Multinational companies in Queensland 134
- Multinational companies in Western Australia 75
- Multinational companies in South Australia 36
- Multinational companies in Melbourne 162
- Multinational companies in Brisbane 41
- Multinational companies in Perth 39
- Multinational companies in North Sydney 36