Company lists · Data verified August 2026

Top 10 Clinical trial recruitment firms based in South Africa

Name: Clinical trial recruitment firms based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 28 companies tracked

There are 28 clinical trial recruitment firms headquartered in South Africa (RevenueBase, August 2026). RevenueBase tracks 803 professional contacts across them, including 264 with verified work emails and 60 with mobile numbers. Johannesburg is the largest hub.

This list covers clinical trial recruitment firms headquartered in South Africa, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

28Companies

803Contacts tracked

264Verified emails

60Mobile numbers

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The 10 largest clinical trial recruitment firms based in South Africa

Ranked by team size

Top 10 of 28 clinical trial recruitment firms based in South Africa, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Subjectwell	Cape Town	51-200	207	107
2	TASK	Cape Town	51-200	160	31
3	BIO Analytical Research Corporation South Africa PTY LTD	Johannesburg	51-200	104	41
4	Farmovs	Bloemfontein	51-200	88	55
5	ONQ Research	Johannesburg	51-200	28	17
6	Trident Clinical	New Park Kimberley	1-10	14	3
7	Johese Clinical Research	Midstream Hill Centurion	1-10	9	6
8	TCD Global	Centurion	501-1,000	6	2
9	Synapta Clinical Research	Durban	11-50	5	1
10	Medinel	Paarl	1-10	2	1

Showing 10 of 28 clinical trial recruitment firms based in South Africa

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Clinical trial recruitment firms based in South Africa at a glance

As of Aug 28, 2026

11-50Median size (employees)

JohannesburgLargest hub · 5 HQs

60Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

Clinical trial recruitment firms by metro

Metro	Companies
Clinical trial recruitment firms in Johannesburg	5
Clinical trial recruitment firms in Cape Town	3
Clinical trial recruitment firms in Centurion	2
Clinical trial recruitment firms in Durban	2
Clinical trial recruitment firms in Bellville	2
Clinical trial recruitment firms in Pretoria	1
Clinical trial recruitment firms in City Of Tshwane	1
Clinical trial recruitment firms in Paarl	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “clinical trial recruitment firms”, with match quality audited by blind human judging, and headquartered in South Africa.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many clinical trial recruitment firms are there based in South Africa?

There are 28 clinical trial recruitment firms headquartered in South Africa as of August 2026 (RevenueBase).

What is the largest company on this list?

Subjectwell, headquartered in Cape Town, tops this list with the largest team on record.

Which city has the most clinical trial recruitment firms?

Johannesburg leads with 5 headquartered companies, followed by Cape Town (3) and Centurion (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 264 verified decision-maker contacts tracked across these 28 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.