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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Santos Ltdsantos.com
Global energy company providing reliable, affordable energy; transitioning to lower carbon fuels, including oil, gas, and carbon capture solutions for homes and industries. |
6,628 | |||
| 2 |
Flinders Universityflinders.edu.au
Leading Australian university focused on excellence in teaching, research, and community engagement with campuses across multiple regions. |
5,835 | |||
| 3 |
BAE Systems Australiabaesystems.com
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. |
3,725 | |||
| 4 |
Babcock Australia & New Zealandbabcock.com.au
Providing defence and civil markets with maritime sustainment, secure communications, helicopter missions, and fleet management across Australasia. |
1,197 | |||
| 5 |
Codan Limitedcodan.com.au
A global group of electronics and engineering businesses specializing in rugged and reliable hardware, software, and embedded systems for various industries worldwide |
1,006 | |||
| 6 |
Kelsian Group Limitedkelsian.com
Australia's largest integrated transport provider and tourism operator, specializing in safe, sustainable, and intelligent transport solutions for communities worldwide |
971 | |||
| 7 |
Saab Australiasaab.com
A prime systems integrator specializing in delivering complex defence and civil security projects, committed to collaboration, innovation, and meeting customer needs |
816 | |||
| 8 |
Detmold Groupdetmoldgroup.com
A leading manufacturer of paper and board packaging products, with global operations and a history dating back to 1948 |
811 | |||
| 9 | 644 | ||||
| 10 |
WGA (Wallbridge Gilbert Aztec)wga.com.au
Engineering and project management company delivering innovative infrastructure solutions across Australia and New Zealand with over 40 years experience. |
642 | |||
| 11 |
Thomas Foods Internationalthomasfoods.com
A global family-owned food business specializing in premium meat, seafood, and fresh produce, committed to quality, sustainability, and innovation |
635 | |||
| 12 |
San Remosanremo.com.au
Australian company producing high-quality pasta and sauces using traditional Italian methods combined with modern technology and controlled wheat sourcing. |
613 | |||
| 13 |
Bridgestone Australia Ltd.bridgestone.com.au
Supplier of high-quality tyres and truck retread products tailored for Australasian conditions, emphasizing innovation, sustainability, and community trust. |
542 | |||
| 14 |
SkyCity Adelaideskycitycareers.com
A leading gaming, entertainment, and hospitality business with four locations, including world-class casinos, luxury hotels, restaurants, bars, and convention centers |
502 | |||
| 15 |
Beach Energy Ltdbeachenergy.com.au
Australian oil and gas business with a pioneering history, largest onshore oil producer, major gas operations across Australia and New Zealand |
487 | |||
| 16 |
Accolade Winesvinarchy.com
Production and distribution of award-winning wines to over 130 countries, driven by passionate, expert teams and continuous innovation. |
467 | |||
| 17 |
Avance Clinicalavancecro.com
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 |
426 | |||
| 18 |
Liebherr-Australialiebherr.com
Liebherr-Australia Pty Ltd sells and supports a wide range of products including cranes, earthmoving equipment, and components across Australia and New Zealand |
408 | |||
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| 19 |
Maptekmaptek.com
A company focused on providing integrated decision-making support solutions for the mining industry to turn data into knowledge and revolutionize mining operations |
397 | |||
| 20 |
Journey Beyondjourneybeyond.com
A leading experiential tourism group offering iconic rail journeys, tours, cruises, lodges, and destinations in Australia that aim to ignite imaginations and exceed expectations |
385 | |||
| 21 |
Viterra Australiaviterra.com.au
We are a leading agricultural network connecting Australian growers with consumers, offering sustainable and quality-controlled products through our integrated supply chain |
383 | |||
| 22 |
Toll Global Logisticstollgroup.com
A South Australian-based logistics and supply chain company specializing in freight transportation and supply chain solutions |
357 | |||
| 23 |
Australian Institute of Businessaib.edu.au
AIB provides innovative online MBA programs with industry-relevant content and flexible learning options for busy professionals worldwide |
347 | |||
| 24 |
Osmofloosmoflo.com
Development of efficient, sustainable, and scalable water and wastewater treatment solutions focused on innovation and long-term environmental sustainability. |
326 | |||
| 25 |
Riskonnect Asia-Pacificriskonnect.com
Provides integrated software solutions enabling organizations to anticipate, manage, and respond to strategic and operational risks globally. |
314 | |||
| 26 |
Porsche Bank Groupporschebank.at
Offers leasing, credit, insurance, and maintenance for VW, Audi, SEAT, 艩KODA, and Porsche vehicles. Operates internationally in numerous countries. |
272 | |||
| 27 |
Australian Vintageavlwines.com.au
A leading Australian wine and drinks company with a diverse portfolio of global brands, focusing on consumer trends and sustainability |
258 | |||
| 28 |
REDARC Electronics Pty Ltdredarcelectronics.com
Design and manufacture rugged mobile power and towing solutions for outdoor recreation, industrial, transport, marine, and defence applications. |
215 | |||
| 29 |
Minelab Metal Detectorsusa.minelab.com
Manufacturer of top-tier metal detectors for treasure hunting, gold prospecting, and landmine detection, driven by innovation and precision engineering |
205 | |||
| 30 |
ResourceCoresourceco.com.au
A leading Australian recycling business processing millions of tonnes of waste annually, producing quality recycled products and alternate fuels to protect the environment |
190 | |||
| 31 |
LMS Energylms.com.au
A leading methane abatement and bioenergy company in Australia, converting landfill methane into renewable energy or destroying it using flares |
184 | |||
| 32 |
BRSbrsresults.com
An Australasian advisory firm specializing in non-technical aspects of asset infrastructure delivery and operations, serving a range of clients in various sectors |
152 | |||
| 33 |
Jobfit Health Groupjobfit.com.au
A leading occupational healthcare provider delivering tailored services including pre-employment assessments, injury management, drug screening, onsite medical services, and wellness programs |
140 | |||
| 34 |
ICS Service Solutionsicsservicesolutions.com
An international cleaning services company with a focus on security, facilities management, and innovative software solutions for efficient and effective operations |
62 | |||
| 35 |
Equans Axima Australia - T/A Noske-Kaeser Marinemarine.equans.com
A global leader in marine and offshore solutions, providing innovative technology in air conditioning, fire protection, and more tailored to clients' needs |
22 | |||
| 36 |
Beefsteak & Burgundy Club Inc.bsb.org.au
Established in 1954, this global fine wine and dining club hosts monthly dinners for members to enjoy wine, food, and friendship worldwide |
4 | |||
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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 South Australia
- The largest companies in South Australia 273
- Healthcare providers in South Australia 31
- Government Administration companies in South Australia 31
- Critical infrastructure operators in South Australia 29
- Manufacturers in South Australia 25
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 Sydney 279
- Multinational companies in Melbourne 162
- Multinational companies in Brisbane 41
- Multinational companies in Perth 39
- Multinational companies in North Sydney 36