Company lists · Data verified August 2026

Top 25 Clinical trial recruitment firms based in Canada

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 90 companies tracked

There are 90 clinical trial recruitment firms headquartered in Canada (RevenueBase, August 2026). RevenueBase tracks 3,491 professional contacts across them, including 1,427 with verified work emails and 197 with mobile numbers. Toronto is the largest hub.

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

90Companies

3,491Contacts tracked

1,427Verified emails

197Mobile numbers

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The 25 largest clinical trial recruitment firms based in Canada

Ranked by team size

Top 25 of 90 clinical trial recruitment firms based in Canada, 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	Cliantha Research Limited	Toronto, ON	1,001-5,000	1,597	685
2	Pharma Medica Research INC	Toronto, ON	201-500	564	175
3	Biopharma Services INC	Toronto, ON	201-500	316	97
4	TRIO	Edmonton, AB	201-500	229	167
5	Probity Medical Research Inc. PMR	Waterloo, ON	51-200	81	52
6	Diex Research	Sherbrooke, QC	51-200	65	36
7	Syreon Health Sciences	Vancouver, BC	51-200	47	25
8	Ozmosis Research INC	Toronto, ON	11-50	45	29
9	Stiris Research INC	London, ON	51-200	37	32
10	Ethica CRO	Montreal, QC	51-200	31	19
11	Scimega Expert Oncology CRO	Laval, QC	11-50	18	12
12	Bowhead Health	Ottawa, ON	11-50	18	1
13	Sciteline	Toronto, ON	11-50	13	9
14	Refuah Solutions LTD	Winnipeg, MB	1-10	13	2
15	Clincove	Toronto, ON	11-50	12	8
16	Centre DE Recherche Saint-Louis	Quebec, QC	11-50	11	6
17	Trial Management Group INC	Toronto, ON	11-50	8	6
18	Prime Site Research Solutions INC	Edmonton	11-50	8	5
19	Q-Croc	Quebec, QC	11-50	8	4
20	Q&t Research	Sherbrooke, QC	11-50	7	6
21	Tdda Specialty Research	Vaughan, ON	11-50	7	2
22	Ecogene-21	Saguenay, QC	11-50	6	6
23	Alpha Recherche Clinique	Levis, QC	11-50	6	3
24	Clinical Development Solutions	Winnipeg, MB	11-50	6	3
25	Bluewater Clinical Research Group	Sarnia, ON	1-10	6	3

Showing 25 of 90 clinical trial recruitment firms based in Canada

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Clinical trial recruitment firms based in Canada at a glance

As of Aug 28, 2026

11-50Median size (employees)

TorontoLargest hub · 24 HQs

197Contacts with mobile numbers

7Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Clinical trial recruitment firms by metro

Metro	Companies
Clinical trial recruitment firms in Toronto	24
Clinical trial recruitment firms in Montreal	10
Clinical trial recruitment firms in Edmonton	6
Clinical trial recruitment firms in London	5
Clinical trial recruitment firms in Mississauga	5
Clinical trial recruitment firms in Vancouver	5
Clinical trial recruitment firms in Brampton	3
Clinical trial recruitment firms in Ottawa	3

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 Canada.
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; 7 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 Canada?

There are 90 clinical trial recruitment firms headquartered in Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

Cliantha Research Limited, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most clinical trial recruitment firms?

Toronto leads with 24 headquartered companies, followed by Montreal (10) and Edmonton (6).

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 1,427 verified decision-maker contacts tracked across these 90 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.