# List of multinational companies in South Australia

Tamtam tracks 36 multinational companies headquartered in South Australia. This list ranks all of them by number of employees on LinkedIn, led by Santos Ltd, Flinders University and BAE Systems Australia. Their median headcount is 408. Half of them were founded in 1985 or later. The most common headquarters are Adelaide (19).

This selection of multinational companies in South Australia includes large organizations from diverse sectors. Santos Ltd is a global energy company transitioning to lower carbon fuels, while Flinders University is a leading Australian university. BAE Systems Australia develops technologies for defense, and Kelsian Group Limited is Australia's largest integrated transport provider. These companies largely represent established entities, with many founded before the 1990s.

The list shows a concentration of headquarters in Adelaide, which is home to many of these multinational operations. Other key locations include Mawson Lakes, Brompton, and Windsor Gardens. The companies span industries such as oil and gas, higher education, defense manufacturing, electronics, transportation, packaging, law, and food production.

🇦🇺 South Australia · 36 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Santos Ltd](https://www.tamtam.ai/c/santos-ltd) (santos.com)<br>Global energy company providing reliable, affordable energy; transitioning to lower carbon fuels, including oil, gas, and carbon capture solutions for homes and industries. | Oil and Gas | 🇦🇺 Adelaide | 6,628 | 1954 |
| 2 | [Flinders University](https://www.tamtam.ai/c/flinders-university) (flinders.edu.au)<br>Leading Australian university focused on excellence in teaching, research, and community engagement with campuses across multiple regions. | Higher Education | 🇦🇺 Adelaide | 5,835 | 1966 |
| 3 | [BAE Systems Australia](https://www.tamtam.ai/c/bae-systems-australia) (baesystems.com)<br>Develops cutting-edge technologies to protect Australia through diverse engineering and global teamwork, providing large-scale defense solutions and career opportunities in a growing sector. | Defense and Space Manufacturing | 🇦🇺 Adelaide | 3,725 | 1953 |
| 4 | [Babcock Australia & New Zealand](https://www.tamtam.ai/c/babcock-australia-and-new-zealand) (babcock.com.au)<br>Providing defence and civil markets with maritime sustainment, secure communications, helicopter missions, and fleet management across Australasia. | Defense and Space Manufacturing | 🇦🇺 Adelaide | 1,197 |  |
| 5 | [Codan Limited](https://www.tamtam.ai/c/codan-limited) (codan.com.au)<br>A global group of electronics and engineering businesses specializing in rugged and reliable hardware, software, and embedded systems for various industries worldwide | Appliances, Electrical, and Electronics Manufacturing | 🇦🇺 Mawson Lakes | 1,006 |  |
| 6 | [Kelsian Group Limited](https://www.tamtam.ai/c/kelsian-group-limited) (kelsian.com)<br>Australia's largest integrated transport provider and tourism operator, specializing in safe, sustainable, and intelligent transport solutions for communities worldwide | Urban Transit Services | 🇦🇺 Adelaide | 971 | 1989 |
| 7 | [Saab Australia](https://www.tamtam.ai/c/saab-australia) (saab.com)<br>A prime systems integrator specializing in delivering complex defence and civil security projects, committed to collaboration, innovation, and meeting customer needs | Defense and Space Manufacturing | 🇦🇺 Mawson Lakes | 816 | 1988 |
| 8 | [Detmold Group](https://www.tamtam.ai/c/detmold-group) (detmoldgroup.com)<br>A leading manufacturer of paper and board packaging products, with global operations and a history dating back to 1948 | Packaging and Containers Manufacturing | 🇦🇺 Brompton | 811 | 1948 |
| 9 | [LK](https://www.tamtam.ai/c/lk) (lk.law)<br>Specialist law firm with expertise in commercial litigation, arbitration, insolvency, professional negligence, investigations, and dispute resolution, serving clients globally with personalized and effective solutions | Law Practice | 🇦🇺 Adelaide | 644 | 2004 |
| 10 | [WGA (Wallbridge Gilbert Aztec)](https://www.tamtam.ai/c/wga-wallbridge-gilbert-aztec) (wga.com.au)<br>Engineering and project management company delivering innovative infrastructure solutions across Australia and New Zealand with over 40 years experience. | Professional Services | 🇦🇺 Adelaide | 642 | 1982 |
| 11 | [Thomas Foods International](https://www.tamtam.ai/c/thomas-foods-international) (thomasfoods.com)<br>A global family-owned food business specializing in premium meat, seafood, and fresh produce, committed to quality, sustainability, and innovation | Farming | 🇦🇺 Dulwich | 635 | 1988 |
| 12 | [San Remo](https://www.tamtam.ai/c/san-remo) (sanremo.com.au)<br>Australian company producing high-quality pasta and sauces using traditional Italian methods combined with modern technology and controlled wheat sourcing. | Food and Beverage Manufacturing | 🇦🇺 Windsor Gardens | 613 | 1936 |
| 13 | [Bridgestone Australia Ltd.](https://www.tamtam.ai/c/bridgestone-australia-ltd) (bridgestone.com.au)<br>Supplier of high-quality tyres and truck retread products tailored for Australasian conditions, emphasizing innovation, sustainability, and community trust. | Motor Vehicle Manufacturing | 🇦🇺 Adelaide | 542 | 1981 |
| 14 | [SkyCity Adelaide](https://www.tamtam.ai/c/skycity-adelaide) (skycitycareers.com)<br>A leading gaming, entertainment, and hospitality business with four locations, including world-class casinos, luxury hotels, restaurants, bars, and convention centers | Hospitality | 🇦🇺 Adelaide | 502 | 1985 |
| 15 | [Beach Energy Ltd](https://www.tamtam.ai/c/beach-energy-ltd) (beachenergy.com.au)<br>Australian oil and gas business with a pioneering history, largest onshore oil producer, major gas operations across Australia and New Zealand | Oil and Gas | 🇦🇺 Adelaide | 487 | 1961 |
| 16 | [Accolade Wines](https://www.tamtam.ai/c/accolade-wines) (vinarchy.com)<br>Production and distribution of award-winning wines to over 130 countries, driven by passionate, expert teams and continuous innovation. | Beverage Manufacturing | 🇦🇺 Adelaide | 467 | 1853 |
| 17 | [Avance Clinical](https://www.tamtam.ai/c/avance-clinical) (avancecro.com)<br>A leading full-service CRO specializing in top-tier clinical trials, pre-clinical to Phase I services, with expertise in multiple therapeutic areas and cutting-edge technology | Biotechnology Research | 🇦🇺 Adelaide | 426 | 2019 |
| 18 | [Liebherr-Australia](https://www.tamtam.ai/c/liebherr-australia) (liebherr.com)<br>Liebherr-Australia Pty Ltd sells and supports a wide range of products including cranes, earthmoving equipment, and components across Australia and New Zealand | Machinery Manufacturing | 🇦🇺 Adelaide | 408 |  |
| 19 | [Maptek](https://www.tamtam.ai/c/maptek) (maptek.com)<br>A company focused on providing integrated decision-making support solutions for the mining industry to turn data into knowledge and revolutionize mining operations | Mining | 🇦🇺 Adelaide | 397 | 1981 |
| 20 | [Journey Beyond](https://www.tamtam.ai/c/journey-beyond) (journeybeyond.com)<br>A leading experiential tourism group offering iconic rail journeys, tours, cruises, lodges, and destinations in Australia that aim to ignite imaginations and exceed expectations | Travel Arrangements | 🇦🇺 Adelaide | 385 | 2016 |
| 21 | [Viterra Australia](https://www.tamtam.ai/c/viterra-australia) (viterra.com.au)<br>We are a leading agricultural network connecting Australian growers with consumers, offering sustainable and quality-controlled products through our integrated supply chain | Transportation, Logistics, Supply Chain and Storage | 🇦🇺 Parkside | 383 |  |
| 22 | [Toll Global Logistics](https://www.tamtam.ai/c/toll-global-logistics) (tollgroup.com)<br>A South Australian-based logistics and supply chain company specializing in freight transportation and supply chain solutions | Transportation, Logistics, Supply Chain and Storage | 🇦🇺 Port Adelaide | 357 |  |
| 23 | [Australian Institute of Business](https://www.tamtam.ai/c/australian-institute-of-business) (aib.edu.au)<br>AIB provides innovative online MBA programs with industry-relevant content and flexible learning options for busy professionals worldwide | Higher Education | 🇦🇺 Adelaide | 347 | 1985 |
| 24 | [Osmoflo](https://www.tamtam.ai/c/osmoflo) (osmoflo.com)<br>Development of efficient, sustainable, and scalable water and wastewater treatment solutions focused on innovation and long-term environmental sustainability. | Environmental Services | 🇦🇺 Burton | 326 | 1991 |
| 25 | [Riskonnect Asia-Pacific](https://www.tamtam.ai/c/riskonnect-asia-pacific) (riskonnect.com)<br>Provides integrated software solutions enabling organizations to anticipate, manage, and respond to strategic and operational risks globally. | Software Development | 🇦🇺 Adelaide | 314 | 1996 |
| 26 | [Porsche Bank Group](https://www.tamtam.ai/c/porsche-bank-group) (porschebank.at)<br>Offers leasing, credit, insurance, and maintenance for VW, Audi, SEAT, ŠKODA, and Porsche vehicles. Operates internationally in numerous countries. | Financial Services | 🇦🇺 Salzburg | 272 | 1966 |
| 27 | [Australian Vintage](https://www.tamtam.ai/c/australian-vintage) (avlwines.com.au)<br>A leading Australian wine and drinks company with a diverse portfolio of global brands, focusing on consumer trends and sustainability | Beverage Manufacturing | 🇦🇺 Cowandilla | 258 |  |
| 28 | [REDARC Electronics Pty Ltd](https://www.tamtam.ai/c/redarc-electronics-pty-ltd) (redarcelectronics.com)<br>Design and manufacture rugged mobile power and towing solutions for outdoor recreation, industrial, transport, marine, and defence applications. | Appliances, Electrical, and Electronics Manufacturing | 🇦🇺 Lonsdale | 215 | 1979 |
| 29 | [Minelab Metal Detectors](https://www.tamtam.ai/c/minelab-metal-detectors) (usa.minelab.com)<br>Manufacturer of top-tier metal detectors for treasure hunting, gold prospecting, and landmine detection, driven by innovation and precision engineering | Appliances, Electrical, and Electronics Manufacturing | 🇦🇺 Mawson Lakes | 205 |  |
| 30 | [ResourceCo](https://www.tamtam.ai/c/resourceco) (resourceco.com.au)<br>A leading Australian recycling business processing millions of tonnes of waste annually, producing quality recycled products and alternate fuels to protect the environment | Environmental Services | 🇦🇺 Rose Park | 190 | 1993 |
| 31 | [LMS Energy](https://www.tamtam.ai/c/lms-energy) (lms.com.au)<br>A leading methane abatement and bioenergy company in Australia, converting landfill methane into renewable energy or destroying it using flares | Renewables & Environment | 🇦🇺 Unley | 184 | 1986 |
| 32 | [BRS](https://www.tamtam.ai/c/brs-adelaide) (brsresults.com)<br>An Australasian advisory firm specializing in non-technical aspects of asset infrastructure delivery and operations, serving a range of clients in various sectors | Business Consulting and Services | 🇦🇺 Adelaide | 152 | 2009 |
| 33 | [Jobfit Health Group](https://www.tamtam.ai/c/jobfit-health-group) (jobfit.com.au)<br>A leading occupational healthcare provider delivering tailored services including pre-employment assessments, injury management, drug screening, onsite medical services, and wellness programs | Medical Practices | 🇦🇺 Wayville | 140 | 1996 |
| 34 | [ICS Service Solutions](https://www.tamtam.ai/c/ics-service-solutions) (icsservicesolutions.com)<br>An international cleaning services company with a focus on security, facilities management, and innovative software solutions for efficient and effective operations | Facilities Services | 🇦🇺 Adelaide | 62 | 1963 |
| 35 | [Equans Axima Australia - T/A Noske-Kaeser Marine](https://www.tamtam.ai/c/equans-axima-australia-t-a-noske-kaeser-marine) (marine.equans.com)<br>A global leader in marine and offshore solutions, providing innovative technology in air conditioning, fire protection, and more tailored to clients' needs | Maritime Transportation | 🇦🇺 Salisbury North | 22 | 2015 |
| 36 | [Beefsteak & Burgundy Club Inc.](https://www.tamtam.ai/c/beefsteak-and-burgundy-club-inc) (bsb.org.au)<br>Established in 1954, this global fine wine and dining club hosts monthly dinners for members to enjoy wine, food, and friendship worldwide | Food and Beverage Services | 🇦🇺 Adelaide | 4 | 1954 |

## 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 South Australia

- [The largest companies in South Australia](https://www.tamtam.ai/l/largest-companies-south-australia) (273)
- [Healthcare providers in South Australia](https://www.tamtam.ai/l/healthcare-providers-south-australia) (31)
- [Government Administration companies in South Australia](https://www.tamtam.ai/l/government-administration-companies-south-australia) (31)
- [Critical infrastructure operators in South Australia](https://www.tamtam.ai/l/critical-infrastructure-operators-south-australia) (29)
- [Manufacturers in South Australia](https://www.tamtam.ai/l/manufacturers-south-australia) (25)

## The same list elsewhere in Australia

- [Multinational companies in Australia](https://www.tamtam.ai/l/multinational-companies-australia) (1,184)
- [Multinational companies in New South Wales](https://www.tamtam.ai/l/multinational-companies-new-south-wales) (512)
- [Multinational companies in Victoria](https://www.tamtam.ai/l/multinational-companies-victoria) (378)
- [Multinational companies in Queensland](https://www.tamtam.ai/l/multinational-companies-queensland) (134)
- [Multinational companies in Western Australia](https://www.tamtam.ai/l/multinational-companies-western-australia) (75)
- [Multinational companies in Sydney](https://www.tamtam.ai/l/multinational-companies-sydney) (279)
- [Multinational companies in Melbourne](https://www.tamtam.ai/l/multinational-companies-melbourne) (162)
- [Multinational companies in Brisbane](https://www.tamtam.ai/l/multinational-companies-brisbane) (41)
- [Multinational companies in Perth](https://www.tamtam.ai/l/multinational-companies-perth) (39)
- [Multinational companies in North Sydney](https://www.tamtam.ai/l/multinational-companies-north-sydney) (36)

---

Source: https://www.tamtam.ai/l/multinational-companies-south-australia