Company lists · Data verified August 2026

Top 15 Clinical trial recruitment firms based in Brazil

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 48 companies tracked

There are 48 clinical trial recruitment firms headquartered in Brazil (RevenueBase, August 2026). RevenueBase tracks 21,317 professional contacts across them, including 10,188 with verified work emails and 5,250 with mobile numbers. Sao Paulo is the largest hub.

This list covers clinical trial recruitment firms headquartered in Brazil, 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.

48Companies

21,317Contacts tracked

10,188Verified emails

5,250Mobile numbers

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The 15 largest clinical trial recruitment firms based in Brazil

Ranked by team size

Top 15 of 48 clinical trial recruitment firms based in Brazil, 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	PPD	Ubatuba	10001+	20,510	10,039
2	Vaxtrials, Part Of Emmes Group	Rio De Janeiro	51-200	72	40
3	H Clinical	Sao Paulo	51-200	72	11
4	Smart Research	n/a	11-50	65	19
5	Science Valley Research Institute	Sao Paulo	51-200	56	22
6	Ibpclin	Rio De Janeiro	11-50	29	17
7	Estern Medical CRO Life Sciences	Sao Paulo	51-200	25	3
8	Rede Optimus	Sao Paulo	11-50	15	13
9	Oncosite	Ijui	11-50	14	9
10	Clinergy Health Research	Sao Paulo	11-50	13	5
11	Atlantis Clinical	Sao Paulo	11-50	7	4
12	Insight Centro DE Pesquisas	Porto Alegre	1-10	6	1
13	CK Recrutamento	Sao Caetano Do Sul	1-10	3	2
14	IOP Pesquisa	Curitiba	1-10	2	1
15	Fidentia	Sao Paulo	1-10	1	1

Showing 15 of 48 clinical trial recruitment firms based in Brazil

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Clinical trial recruitment firms based in Brazil at a glance

As of Aug 28, 2026

11-50Median size (employees)

Sao PauloLargest hub · 15 HQs

5,250Contacts with mobile numbers

48Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

501-1,000

10001+

Clinical trial recruitment firms by metro

Metro	Companies
Clinical trial recruitment firms in Sao Paulo	15
Clinical trial recruitment firms in Porto Alegre	6
Clinical trial recruitment firms in Rio De Janeiro	4
Clinical trial recruitment firms in Curitiba	3
Clinical trial recruitment firms in Campinas	2
Clinical trial recruitment firms in Belo Horizonte	2
Clinical trial recruitment firms in Natal	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 Brazil.
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; 48 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 Brazil?

There are 48 clinical trial recruitment firms headquartered in Brazil as of August 2026 (RevenueBase).

What is the largest company on this list?

PPD, headquartered in Ubatuba, tops this list with the largest team on record.

Which city has the most clinical trial recruitment firms?

Sao Paulo leads with 15 headquartered companies, followed by Porto Alegre (6) and Rio De Janeiro (4).

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 10,188 verified decision-maker contacts tracked across these 48 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.