Company lists · Data refreshed September 2026

Top 25 Clinical trial research centers worldwide

Name: Clinical trial research centers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 4,819 companies tracked

RevenueBase identified 4,819 clinical trial research centers worldwide as of September 2026 and tracks 264,892 professional contacts across them, including 111,247 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers clinical trial research centers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026. Country and city lists for clinical trial research centers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

4,819Companies

264,892Contacts tracked

111,247Verified emails

0Mobile numbers

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The 25 largest clinical trial research centers worldwide

Ranked by team size

Top 25 of 4,819 clinical trial research centers worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to clinical trial research centers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Icon PLC	Indirect evidence	Dublin, JapanHQ checked Sep 16, 2026	10001+	26,555 contacts →
	Indirect evidence “Since our foundation in Dublin, Ireland in 1990, our mission has been to help our clients to accelerate the development of drugs and devices that save lives and improve quality of…” Source: RevenueBase Database · checked Sep 16, 2026
2	PPD	Strong evidence	Waltham, MA, United StatesHQ checked Sep 16, 2026	10001+	20,530 contacts →
	Strong evidence “The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Source: RevenueBase Database · checked Sep 16, 2026
3	Parexel	Strong evidence	Raleigh, NC, United StatesHQ checked Sep 16, 2026	10001+	19,257 contacts →
	Strong evidence “Parexel is a leading global clinical research organization (CRO) providing insights-driven Clinical and Consulting solutions to the world’s life sciences industry.” Source: RevenueBase Database · checked Sep 16, 2026
4	Fortrea	Strong evidence	Research Triangle Park, NC, United StatesHQ checked Sep 16, 2026	10001+	10,632 contacts →
	Strong evidence “Fortrea (Nasdaq: FTRE) is a leading global clinical research organization (CRO) dedicated to providing innovative clinical development solutions to the life sciences industry.” Source: RevenueBase Database · checked Sep 16, 2026
5	Medpace	Strong evidence	Cincinnati, OH, United StatesHQ checked Sep 16, 2026	5,001-10,000	5,960 contacts →
	Strong evidence “Medpace is a scientifically-driven, global, full-service clinical contract research organization (CRO) providing Phase I-IV clinical development services to the biotechnology…” Source: RevenueBase Database · checked Sep 16, 2026
6	Covance	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 16, 2026	10001+	5,220 contacts →
	Indirect evidence “As the drug development business of Laboratory Corporation of America Holdings (Labcorp) and the world’s most comprehensive drug development #CRO service company, we have helped…” Source: RevenueBase Database · checked Sep 16, 2026
7	PRA Health Sciences	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 16, 2026	10001+	4,708 contacts →
	Indirect evidence “PRA is now an ICON plc company.” Source: RevenueBase Database · checked Sep 16, 2026
8	Almac Group	Indirect evidence	Craigavon, United KingdomHQ checked Sep 16, 2026	5,001-10,000	4,577 contacts →
	Indirect evidence “Partnering to Advance Human Health A unique culture delivering exceptional solutions: Almac is a financially secure, privately owned organisation with 7,800+ employees globally.” Source: RevenueBase Database · checked Sep 16, 2026
9	Worldwide Clinical Trials	Strong evidence	Research Triangle Park, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	3,440 contacts →
	Strong evidence “Worldwide Clinical Trials (Worldwide) is a global CRO serving development-driven biopharmaceutical companies, with more than 4,400 professionals operating across more than 70…” Source: RevenueBase Database · checked Sep 16, 2026
10	Medidata Solutions	Strong evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,704 contacts →
	Strong evidence “Medidata is powering smarter treatments and healthier people through digital solutions to support clinical trials.” Source: RevenueBase Database · checked Sep 16, 2026
11	Premier Research	Strong evidence	Morrisville, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,584 contacts →
	Strong evidence “Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Source: RevenueBase Database · checked Sep 16, 2026
12	PSI CRO	Partial evidence	Zug, SwitzerlandHQ checked Sep 16, 2026	1,001-5,000	2,494 contacts →
	Partial evidence “PSI is a leading full-service global Contract Research Organization whose key strength is predictable patient enrollment across multiple therapeutic areas.” Source: RevenueBase Database · checked Sep 16, 2026
13	Signant Health	Strong evidence	Blue Bell, PA, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,083 contacts →
	Strong evidence “For 25+ years, Signant Health has been pioneering solutions and methodologies that propel clinical research programs toward regulatory success.” Source: RevenueBase Database · checked Sep 16, 2026
14	Propharma	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,079 contacts →
	Indirect evidence “At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.” Source: RevenueBase Database · checked Sep 16, 2026
15	Precision For Medicine	Strong evidence	Bethesda, MD, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,781 contacts →
	Strong evidence “Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…” Source: RevenueBase Database · checked Sep 16, 2026
16	Altasciences	Indirect evidence	Laval, QC, CanadaHQ checked Sep 16, 2026	1,001-5,000	1,759 contacts →
	Indirect evidence “Outsourcing made easy with a one-stop solution to early-phase drug development.” Source: RevenueBase Database · checked Sep 16, 2026
17	Cliantha Research Limited	Strong evidence	Ahmedabad, IndiaHQ checked Sep 16, 2026	1,001-5,000	1,612 contacts →
	Strong evidence “Cliantha Research, full-service clinical research organization (CRO), provides comprehensive and integrated offerings in Early Phase (BA/BE and Phase I) trials, Late Phase (Phase…” Source: RevenueBase Database · checked Sep 16, 2026
18	Advarra	Strong evidence	Columbia, MD, United StatesHQ checked Sep 16, 2026	501-1,000	1,581 contacts →
	Strong evidence “Advarra provides the platform, insights, and expertise that make clinical trials more efficient and connected.” Source: RevenueBase Database · checked Sep 16, 2026
19	CYTEL	Strong evidence	Cambridge, MA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,580 contacts →
	Strong evidence “Cytel is the world’s leading data-science CRO, driving advancements in human health through robust analytics and innovative clinical trial software.” Source: RevenueBase Database · checked Sep 16, 2026
20	Clinchoice	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,516 contacts →
	Indirect evidence “ClinChoice is a leading global full & functional service CRO, renowned for its exceptional product development and lifecycle management capabilities across the pharmaceutical…” Source: RevenueBase Database · checked Sep 16, 2026
21	Veeda Lifesciences	Strong evidence	Ahmedabad, IndiaHQ checked Sep 16, 2026	501-1,000	1,320 contacts →
	Strong evidence “We partner with innovator and generic companies using our high-quality infrastructure and a global network of clinical trial sites, to launch novel therapies and new products for…” Source: RevenueBase Database · checked Sep 16, 2026
22	Suvoda	Strong evidence	Conshohocken, PA, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,255 contacts →
	Strong evidence “Suvoda is a global clinical trial technology company, now strengthened by our merger with Greenphire.” Source: RevenueBase Database · checked Sep 16, 2026
23	Vimta Labs LTD	Indirect evidence	Hyderabad, IndiaHQ checked Sep 16, 2026	1,001-5,000	1,239 contacts →
	Indirect evidence “Founded in 1984 with headquarters in Hyderabad, India, VIMTA LABS LTD.” Source: RevenueBase Database · checked Sep 16, 2026
24	Lambda Therapeutic Research	Strong evidence	Ahmedabad, IndiaHQ checked Sep 16, 2026	1,001-5,000	1,235 contacts →
	Strong evidence “Lambda Therapeutic Research is a leading full-service Global Clinical Research Organization (CRO) headquartered in Ahmedabad (India), with facilities and operations in Mehsana…” Source: RevenueBase Database · checked Sep 16, 2026
25	Perceptive INC	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,197 contacts →
	Strong evidence “Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: clinical trial research centers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names clinical trial research centers.
Partial evidence: Its own public description names part of clinical trial research centers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clinical trial research centers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 4,819 clinical trial research centers worldwide

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Clinical trial research centers worldwide at a glance

As of Sep 16, 2026

42.0%Verified-email coverage

55.0Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

1,854

11-50

1,790

51-200

742

201-500

212

501-1,000

1,001-5,000

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among clinical trial research centers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 27 countries, largest first: the United States, India, the United Kingdom, Germany, Canada, France, Australia, Poland, Brazil, China and 17 more. Country and city lists for clinical trial research centers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “clinical trial research centers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names clinical trial research centers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among clinical trial research centers, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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: Every listed company carries at least one verified work email, 111,247 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Clinical trial research centers by location

43 lists · largest first

Every Clinical trial research centers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names clinical trial research centers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many clinical trial research centers are there worldwide?

RevenueBase identified 4,819 clinical trial research centers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Icon PLC, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most clinical trial research centers?

The United States leads with 2,238 companies, followed by India (563) and the United Kingdom (289). Every clinical trial research centers list by country and city is linked on this page.

Which city has the most clinical trial research centers?

London leads with 82 headquartered companies, followed by Miami (80) and Hyderabad (77).

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 111,247 verified decision-maker contacts tracked across these 4,819 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.