| # | Company | Employees |
|---|---|---|
| 1 |
Eskom Holdings SOC Ltdeskom.co.za
A leading power utility in South Africa, with a significant presence in electricity generation, transportation, and distribution on the African continent |
42,862 |
| 2 |
Transnet SOC Ltdtransnet.net
Management of ports, rail, and pipelines to support South Africa's economic growth through infrastructure modernization and strategic partnerships. |
27,696 |
| 3 |
City of Cape Towncapetown.gov.za
Municipality in Cape Town offering a diverse range of services to 4 million residents, with a focus on community, development, and growth |
22,864 |
| 4 |
University of Pretoriaup.ac.za
Multi-faculty university offering diverse postgraduate programs, producing top graduates, focusing on research, equity, and African development. |
12,260 |
| 5 |
University of Cape Townuct.ac.za
Leading African university focused on research, academic excellence, social justice, producing globally recognized graduates, and promoting diversity and transformation. |
11,751 |
| 6 |
University of South Africa/Universiteit van Suid-Afrikaunisa.ac.za
A comprehensive institution offering open learning and distance education, producing graduates who succeed with diligence, determination, and commitment, making contributions to society |
11,711 |
| 7 |
Transnet Freight Railtransnetfreightrail-tfr.net
A leading heavy haul freight rail operator with extensive infrastructure in South Africa and connections to other networks in the sub-Saharan region |
11,184 |
| 8 |
University of KwaZulu-Natalukzn.ac.za
University offering diverse undergraduate and postgraduate programs across multiple campuses, emphasizing innovative teaching, research, and professional degrees. |
10,139 |
| 9 |
University of the Free Stateufs.ac.za
Established in 1904, this institution of higher education in South Africa offers a wide range of academic programs to over 34,000 students |
9,368 |
| 10 |
City of Johannesburgjoburg.org.za
Management of Johannesburg's local governance, providing municipal services, addressing housing and infrastructure challenges across diverse city areas. |
8,564 |
| 11 |
Tshwane University of Technologytut.ac.za
A leading institution offering quality education with an entrepreneurial focus, fostering innovation and creative thinking to create job creators and entrepreneurs |
6,643 |
| 12 |
University of the Western Capeuwc.ac.za
A national university dedicated to excellence in teaching, research, and nurturing South Africa's cultural diversity while addressing societal needs creatively and critically |
6,000 |
| 13 |
Cape Peninsula University of Technologycput.ac.za
A leading institution in Africa offering a wide range of accredited undergraduate and postgraduate courses in various fields of study |
5,763 |
| 14 |
South African Airwaysflysaa.com
Leading carrier in Africa, offering passenger and cargo transport services, maintenance facilities, catering, and regional flights within South Africa and internationally |
5,408 |
| 15 |
Council for Scientific and Industrial Research (CSIR)csir.co.za
Accelerating socio-economic prosperity in South Africa through innovation and technology localization, providing knowledge solutions for inclusive and sustainable industry and society advancement |
4,802 |
| 16 |
Transnet Port Terminalstransnet.net
Leading terminal operator in South Africa, specializing in loading and offloading cargo at seven ports Focused on market sectors and implementing Transnet 40 strategy for growth |
4,449 |
| 17 |
Durban University of Technologydut.ac.za
A leading university of technology in KwaZulu-Natal with a focus on high-quality education, research, innovation, and fostering an entrepreneurial spirit among its members |
4,250 |
| 18 |
Transnet Engineeringtransnetengineering.net
A global engineering division offering research, manufacturing, and maintenance services/products to the rail industry, with a focus on the African continent |
3,504 |
| 19 |
Road Accident Fundraf.co.za
The company provides compensation to drivers in South Africa for liability and damage caused by traffic collisions, excluding property damage |
3,267 |
| 20 |
iYunivesithi Walter Sisuluwsu.ac.za
Higher education institution focusing on technology integration, delivering impactful learning experiences and fostering innovation across African communities. |
3,159 |
| 21 |
Rhodes Universityru.ac.za
A prestigious South African university known for academic excellence, offering a wide range of undergraduate and postgraduate programs with a focus on research and student success |
2,949 |
| 22 |
Airports Company South Africaairports.co.za
Management and operation of nine South African airports, international airport expansions, and partnerships to enhance global airport infrastructure and services. |
2,914 |
| 23 |
Central University of Technology, Free Statecut.ac.za
A leading institution in South Africa offering quality education and training in science, engineering, and technology with a focus on customer service and innovation |
2,715 |
| 24 |
South African Reserve Bankresbank.co.za
Central bank focused on maintaining price stability, supporting balanced economic growth, and fostering a fair, competitive market economy in South Africa. |
2,699 |
| 25 |
Transnet National Ports Authoritytransnetnationalportsauthority.net
This company manages the national port system in South Africa, providing infrastructure and marine services at commercial seaports |
2,635 |
| 26 |
National Health Laboratory Service
A provider of consumer health services, located in Johannesburg, South Africa, specializing in laboratory testing and diagnostics |
2,381 |
| 27 |
Agricultural Research Councilarc.agric.za
A leading science institution conducting research, developing human capital, and fostering innovation to support and advance the agricultural sector |
2,370 |
| 28 |
Nelson Mandela Metropolitan Universityac.za
African university offering quality education to contribute to sustainability, guided by values of diversity, excellence, integrity, and environmental responsibility |
2,140 |
| 29 |
Chris Hani Baragwanath Hospitalchrishanibaragwanathhospital.co.za
A hospital and healthcare provider located in Johannesburg, South Africa, serving the community with medical services and care |
1,999 |
| 30 |
PetroSApetrosa.co.za
South African national oil corporation specializing in gas-to-liquids technology, operating major refineries and pursuing investment opportunities in Africa and internationally |
1,699 |
| 31 |
Mangosuthu University of Technologymut.ac.za
A higher educational institution in South Africa, MUT offers technology-focused education, empowers students through work-integrated learning, and revitalizes the Umlazi Township community |
1,399 |
| 32 |
Johannesburg Waterjohannesburgwater.co.za
The company provides water and wastewater services to a large area, supplying 16 billion liters of water daily and treating 964 Ml of sewage per day |
1,264 |
| 33 |
North East Ambulance Serviceneas.nhs.uk
Provides emergency ambulance response, patient transport, NHS 111 and 999 call handling, community training, and medical event support across North East region. |
1,210 |
| 34 |
Sefako Makgatho Health Sciences Universitysmu.ac.za
Established as a health sciences university by the South African government, following the separation from the University of Limpopo based on recommendations |
1,177 |
| 35 |
HSRC (Human Sciences Research Council)hsrc.ac.za
The Human Sciences Research Council conducts social-scientific projects in partnership globally, with a focus on Africa, to support development and policy-making |
1,177 |
| 36 |
uMngeni-uThukela Waterumgeni.co.za
Global leader in sustainable water provision and related services Established in 1974 as a State-Owned Entity Find us on social media for information and education |
1,140 |
| 37 |
City Powercitypower.co.za
The company ensures accurate billing, handles adjustments and meter readings, investigates unbilled accounts, resolves customer queries, and submits detailed reports |
1,108 |
| 38 |
South African Medical Research Councilsamrc.ac.za
Driving health research and innovation in South Africa to improve the population's well-being and quality of life through relevant studies and technology transfer |
1,041 |
| 39 |
Armscorarmscor.co.za
Specializing in complex defense and security acquisition projects, research, and development solutions for all branches of the military |
1,029 |
| 40 |
Northlink Collegenorthlink.co.za
The company, under the National Department of Higher Education, aims to advance South Africa's post-school system through planning, regulating, and coordinating educational opportunities |
942 |
| 41 |
Ezemvelo KZN Wildlifekznwildlife.com
A provincial agency in KwaZulu-Natal focused on biodiversity conservation and related activities within the region |
848 |
| 42 |
Mintekmintek.co.za
A leading technology organization specializing in mineral processing and extractive metallurgy, providing services, consulting, and innovative products to clients worldwide |
845 |
| 43 |
Industrial Development Corporation of SA Ltd. (IDC)idc.co.za
An established organization in South Africa that develops domestic industrial capacity, implements industrial policy, and facilitates job creation through industrialization |
815 |
| 44 |
National Youth Development Agencynyda.gov.za
Engaged in facilitating lending services, promoting skills development, offering job opportunities, and other related activities |
804 |
| 45 |
Vaal University of Technology (VUT)vut.ac.za
A technical institution offering advanced education since 1966, now operating as a University of Technology with significant growth and satellite campuses |
753 |
| 46 |
South African Bureau of Standardssabs.co.za
A statutory body promoting standardization and quality through certification, testing, and inspection services for products and services in South Africa |
711 |
| 47 |
Sol Plaatje Universityspu.ac.za
A university committed to learning, research, and social engagement, with a focus on excellence, democratic practice, and knowledge economy leadership |
704 |
| 48 |
The National Research Foundation of South Africa (NRF)nrf.ac.za
Promoting and supporting research through funding, human resource development, and providing facilities for knowledge creation, innovation, and societal improvement. |
675 |
| 49 |
GPAA (Government Pensions Administration Agency)gepf.co.za
Administers pensions for the Government Employees Pension Fund and National Treasury on behalf of the Government Pensions Administration Agency |
647 |
| 50 |
Working on Fire (South Africa)workingonfire.org
A program providing work opportunities to young individuals from marginalized communities by training them in fire management, prevention, and community awareness |
639 |
| 51 |
Johannesburg Road Agency(Pvt) Ltdorg.za
Specializing in roads rehabilitation, traffic management, stormwater management, and bridge maintenance in Johannesburg Part of the City of Joburg network of companies |
637 |
| 52 |
Daybreak Foodsdaybreak.co.za
Leading South African poultry producer and integrated company focused on reshaping the business portfolio while maintaining a strong connection with the local community |
633 |
| 53 |
University of Mpumalangaump.ac.za
This organization fosters positive learning experiences by providing high-quality teaching and research, promoting innovation and transformation, and collaborating with strategic partners |
588 |
| 54 |
Independent Development Trustidt.org.za
The organization manages and delivers social infrastructure and development programs in rural communities, supporting government initiatives for citizen services and community empowerment |
551 |
| 55 |
FSCA South Africafsca.co.za
Financial regulator in South Africa focused on market integrity, customer protection, financial education, stability, and implementing the Twin Peaks model of regulation |
551 |
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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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