This list features corporate groups and holding companies based in Melbourne. It includes large enterprises such as CSL, a global biotechnology company delivering lifesaving medicines, and Probe Group, a provider of customer experience and business process outsourcing services. Other notable companies are BlueScope, an international supplier of steel products, and Newcrest Mining, a producer of gold and copper. These companies represent a range of sectors, from biotechnology and financial services to mining and manufacturing, indicating a diverse economic landscape.
A significant pattern observed among these Melbourne-based corporate groups is their broad international reach. Many, like Computershare, a global leader in diverse services, and Treasury Wine Estates, which crafts and shares wines globally, operate across multiple countries and continents. This suggests that Melbourne serves as a headquarters for companies with extensive global operations rather than purely local or national focus.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 23,172 | ||||
| 2 |
Probe Groupprobecx.com
Provider of customer experience and business process outsourcing services combining digital innovation with a people-first approach across global markets. |
9,782 | |||
| 3 |
Computersharecomputershare.com
Global leader offering diverse services and products across multiple industries, promoting entrepreneurial spirit and service excellence for talented employees worldwide |
8,166 | |||
| 4 |
BlueScopebluescope.com
A leading international supplier of steel products and solutions for building and construction markets, focusing on sustainability, innovation, and a circular economy approach |
7,871 | |||
| 5 |
Newcrest Miningnewmont.com
A leading producer of gold, copper, silver, lead, and zinc Known for strong ESG practices, value creation, safety standards, and technical expertise |
6,237 | |||
| 6 |
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 | |||
| 7 |
Treasury Wine Estatestweglobal.com
Crafting and sharing exceptional wines globally, managing iconic brands, vineyards, and fostering memorable wine experiences worldwide. |
2,578 | |||
| 8 |
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 | |||
| 9 |
Hansen Technologieshansencx.com
provides mission-critical software and expertise to energy, water, and telecommunications industries enabling innovation, new services, and regulatory compliance worldwide. |
1,662 | |||
| 10 |
Murdoch Children's Research Institute (MCRI)mcri.edu.au
Leading child health research institute in Australia, dedicated to preventing and treating childhood conditions through research, clinical care, and genetic testing |
1,490 | |||
| 11 |
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 | |||
| 12 |
McMillan Shakespeare (MMSG)mmsg.com.au
A diverse company providing employee benefits, fleet management, and disability support, with a focus on making complex matters simple and putting people first |
1,248 | |||
| 13 |
Kineticwearekinetic.com
A global transport network operator providing bus and rail services in multiple countries, committed to sustainability, diversity, and community impact |
1,168 | |||
| 14 |
Intrepid Groupintrepidgroup.travel
Global leader in sustainable adventure travel, offering unique experiences in over 120 countries while promoting social and environmental responsibility |
1,121 | |||
| 15 |
Pact Group Holdings Ltdpactgroup.com
Leading circular economy with innovative packaging, reuse, and recycling solutions focused on sustainability and creating lasting environmental value. |
979 | |||
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 |
DBG Healthdbghealth.com.au
Leading diversified group providing pharmaceuticals, consumer health brands, independent pharmacy services, and personalized wellness solutions through various specialized divisions across Australia. |
859 | |||
| 17 |
Nucleus Networknucleusnetwork.com
global provider specializing in early phase clinical trials, offering access to major regulatory markets with extensive experience and scientific leadership |
820 | |||
| 18 |
GPC Asia Pacificgpcasiapac.com
A leading supplier of industrial, automotive aftermarket parts, and services in the Asia Pacific region, driving world movements with a diverse product range and global presence |
804 | |||
| 19 |
PMY Grouppmygroup.com
Providing comprehensive technology infrastructure, experiential systems, and intelligence solutions to optimize operations and enhance live venues and major events worldwide. |
760 | |||
| 20 |
Netwealth - See Wealth Differently (ASX:NWL)netwealth.com.au
Provides innovative portfolio administration, superannuation, and managed account solutions for investors and financial advisers through an award-winning investment platform and custodial services. |
725 | |||
| 21 |
Libertyliberty.com.au
provides innovative and flexible lending solutions supporting over 900,000 customers with financial needs, committed to inclusion and community support |
725 | |||
| 22 |
Catapultcatapult.com
A global sports technology company leveraging sports science and analytics to enhance athlete performance, prevent injuries, and track return to play |
703 | |||
| 23 |
Zenitas Healthcarezenitas.com.au
This company offers integrated health, aged care, and disability services to empower individuals to live healthier, happier, and more independent lives in their own homes and communities |
681 | |||
| 24 |
Munro Footwear Groupmunrofootweargroup.com.au
A footwear group with a diverse portfolio of trusted brands, focusing on empowering people to embrace life's moments through quality shoes |
533 | |||
| 25 |
La Trobe Financiallatrobefinancial.com.au
Specialises in alternative asset management, providing finance and credit investment solutions to institutional and retail investors in Australia. |
530 | |||
| 26 |
Convergeconvergeinternational.com.au
A leading Australian provider of Employee Assistance Programs, consulting, and training services, specializing in workplace behavior, wellbeing, and productivity initiatives |
460 | |||
| 27 |
SPC Globalspcglobalgroup.com
Company offers packaged fruit, vegetables, beverages, ready meals, dairy, and wellness products with operations in Australia and Asia. |
442 | |||
| 28 |
MedHealthmedhealth.com.au
MedHealth is a group of health, medical, and employment brands that collaborate to improve health and employment outcomes for individuals and populations |
406 | |||
| 29 |
CETECcetec.com.au
An independent consultancy specializing in environmental, sustainability, and occupational health services for buildings and the built environment, utilizing a scientific approach for comprehensive solutions |
394 | |||
| 30 |
Clemenger Careers Australia & New Zealandcle.ms
Leading marketing communications group in Australia & New Zealand, with 26+ businesses offering creative, advertising, PR, design, and market research services Over 1,600 employees across multiple locations |
393 | |||
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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 Melbourne
- The largest companies in Melbourne 637
- Multinational companies in Melbourne 162
- Financial services firms in Melbourne 90
- Financial Services companies in Melbourne 77
- Professional services firms in Melbourne 76
- Retail chains in Melbourne 55
- Critical infrastructure operators in Melbourne 51
- Consulting firms in Melbourne 45
- Companies with a mobile app in Melbourne 44
- IT Services and IT Consulting companies in Melbourne 44
- Education providers in Melbourne 39
- Public sector organisations in Melbourne 36
- Publicly traded companies in Melbourne 36
- SaaS companies in Melbourne 33
- Healthcare providers in Melbourne 31
- E-commerce companies in Melbourne 25
The same list elsewhere in Australia
- Corporate groups and holding companies in Australia 280
- Corporate groups and holding companies in New South Wales 101
- Corporate groups and holding companies in Victoria 89
- Corporate groups and holding companies in Queensland 37
- Corporate groups and holding companies in Western Australia 29
- Corporate groups and holding companies in Sydney 57