| # | Company | Employees |
|---|---|---|
| 1 |
South African Revenue Service (SARS)sars.gov.za
Provides comprehensive tax and revenue collection services, offers protection against illicit trade, promotes trade facilitation, and advises on financial matters |
11,707 |
| 2 |
Department of Basic Educationeducation.gov.za
Provides education services for students from early childhood development to adult literacy programs, aiming to support South Africa's school education system |
11,111 |
| 3 |
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 |
| 4 |
Gauteng Provincial Governmentgautengonline.gov.za
They implement legislation, develop policies, and coordinate provincial administration to support effective governance and social equality with integrity and professionalism |
6,233 |
| 5 |
City of Tshwane Metropolitan Municipalitytshwane.gov.za
Local government authority managing metropolitan area centered on Pretoria, including surrounding towns and localities in northern Gauteng Province. |
5,309 |
| 6 |
Ekurhuleni Metropolitan Municipalityekurhuleni.gov.za
Metropolitan Municipality in Gauteng with a Mayoral Executive System, consisting of 11 former municipalities and 202 councillors for community participation |
3,353 |
| 7 |
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 |
| 8 |
the dti (Department of Trade and Industry: Republic of South Africa)thedtic.gov.za
Facilitating economic transformation, industrial development, and inclusive growth in South Africa through strategic objectives and creating a conducive environment for investment and trade |
1,743 |
| 9 |
City of Ekurhuleni Metropolitan Municipalityekurhuleni.gov.za
Local government of East Rand region in South Africa, providing municipal services and governance to residents within the Ekurhuleni Metropolitan Municipality |
1,553 |
| 10 |
Departments: Cooperative Governance and Traditional Affairscogta.gov.za
A government ministry overseeing departments, entities, and agencies related to cooperative governance, traditional affairs, municipal infrastructure, local government, and city networks |
1,533 |
| 11 |
Department of Public Works and Infrastructurepublicworks.gov.za
A government department in South Africa managing immovable assets, overseeing infrastructure development, creating job opportunities, and managing houses for the executive branch |
1,402 |
| 12 |
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 |
| 13 |
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 |
| 14 |
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 |
| 15 |
DPSAdpsa.gov.za
A government institution responsible for public service and administration, operating based on constitutional mandates and relevant legislation |
528 |
| 16 |
South African Local Government Associationsalga.org.za
An autonomous association representing and supporting all 257 South African local governments, focusing on local government transformation and accountability |
495 |
| 17 |
Gauteng Office of the Premiergautengonline.co.za
A provincial government in Gauteng, South Africa, led by the Premier and Executive Council, implementing policies and legislation for people-centered governance |
494 |
| 18 |
Midvaal Local Municipalitymidvaal.gov.za
A rapidly growing municipality in Gauteng, offering top quality of life with booming tourism, recreation, and industry, attracting multi-billion rand investments |
485 |
| 19 |
Department of Sport, Arts and Culturedsac.gov.za
The organization provides leadership, policy frameworks, and support for the development, promotion, and preservation of sports, arts, culture, and heritage in South Africa |
467 |
| 20 |
City of Ekurhuleniekurhuleni.gov.za
A company involved in the restructuring and merging of local governments in South Africa's East Rand region, now known as Ekurhuleni |
381 |
| 21 |
Rand West City Local Municipalityrandwestcity.gauteng.gov.za
A local governing body located in the West Rand District, providing services and infrastructure for its residents and promoting community development |
327 |
| 22 |
National Regulator for Compulsory Specificationnrcs.org.za
A regulatory agency established to enforce compulsory specifications under the Department of Trade, Industry and Competition since 2008 |
249 |
| 23 |
Department of Science, Technology and Innovationdsti.gov.za
We support South Africa's development by fostering leadership, an enabling environment, and resources for science, technology, and innovation |
193 |
| 24 |
Johannesburg Social and Housing Companyjoshco.co.za
Affordable social housing provider in Johannesburg, catering to families earning between R3500 and R7500 with quality housing solutions |
179 |
| 25 |
The Innovation Hubtheinnovationhub.com
An innovation agency in Gauteng Province promoting economic development through fostering innovation, entrepreneurship, enterprise programs, technology innovation, skills development, and revitalizing township economy |
154 |
| 26 |
Johannesburg Development Agencyjda.org.za
The entity of the City of Johannesburg focuses on urban regeneration through capital works projects and partnerships in various areas |
146 |
| 27 |
National Department of Environmental Affairsdedea.gov.za
Promoting economic growth and development in the Eastern Cape through policy initiatives and strategic planning to enhance citizens' lives |
145 |
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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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