Company lists · Data refreshed September 2026

Top 25 Contract research organizations based in the Netherlands

Name: Contract research organizations based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 148 companies tracked

RevenueBase identified 148 contract research organizations headquartered in the Netherlands as of September 2026 and tracks 2,799 professional contacts across them, including 1,373 with verified work emails. Amsterdam is the largest hub.

This list covers contract research organizations headquartered in the Netherlands, 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 19, 2026.

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 19, 2026 86% judged on-target in blind review

148Companies

2,799Contacts tracked

1,373Verified emails

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The 25 largest contract research organizations based in the Netherlands

Ranked by team size

Top 25 of 148 contract research organizations based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to contract research organizations: 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	Symeres	Strong evidence	Nijmegen, NetherlandsHQ checked Sep 19, 2026	501-1,000	377 contacts →
	Strong evidence “Symeres is a leading contract research, development and manufacturing organization (CDMO & CRO) supporting pharmaceutical and biotechnology companies across the full drug…” Source: RevenueBase Database · checked Sep 19, 2026
2	Centre For Human Drug Research	Indirect evidence	Leiden, NetherlandsHQ checked Sep 19, 2026	201-500	367 contacts →
	Indirect evidence “The CRO for data-intensive, early phase clinical studies.” Source: RevenueBase Database · checked Sep 19, 2026
3	Julius Clinical	Strong evidence	Zeist, NetherlandsHQ checked Sep 19, 2026	201-500	185 contacts →
	Strong evidence “P95 Julius Clinical is a global, science-led contract research organization (CRO) supporting clinical development from early-phase trials through late-phase and real-world…” Source: RevenueBase Database · checked Sep 19, 2026
4	NIZO	Strong evidence	Ede, NetherlandsHQ checked Sep 19, 2026	51-200	112 contacts →
	Strong evidence “NIZO is one of the most renowned contract research organisations for better food and health in the world.” Source: RevenueBase Database · checked Sep 19, 2026
5	Triskelion	Indirect evidence	Utrecht, NetherlandsHQ checked Sep 19, 2026	51-200	89 contacts →
	Indirect evidence “Safe and compliant.” Source: RevenueBase Database · checked Sep 19, 2026
6	Sire Life Sciences	Indirect evidence	Leiden, NetherlandsHQ checked Sep 19, 2026	201-500	88 contacts →
	Indirect evidence “SIRE® Life Sciences is the market-leading partner for Life Sciences consultancy, project management, and secondment services in the Netherlands.” Source: RevenueBase Database · checked Sep 19, 2026
7	Emsere	Indirect evidence	Leiden, NetherlandsHQ checked Sep 19, 2026	51-200	87 contacts →
	Indirect evidence “Emsere is the world’s leading medical equipment solutions provider for clinical trials and delivers full, global logistics services to suit study-specific needs.” Source: RevenueBase Database · checked Sep 19, 2026
8	PCS	Indirect evidence	Woerden, NetherlandsHQ checked Sep 19, 2026	11-50	85 contacts →
	Indirect evidence “PCS helps pharmaceutical and biotech organisations turn compliance into a performance advantage.” Source: RevenueBase Database · checked Sep 19, 2026
9	Qserve Group	Indirect evidence	Arnhem, NetherlandsHQ checked Sep 19, 2026	51-200	77 contacts →
	Indirect evidence “Qserve is a trusted global partner for MedTech Regulatory, Clinical, and Quality Compliance, as well as a full-service CRO for medical device clinical trials.” Source: RevenueBase Database · checked Sep 19, 2026
10	Progress	Indirect evidence	Hoofddorp, NetherlandsHQ checked Sep 19, 2026	51-200	71 contacts →
	Indirect evidence “Progress – Experts in Life Sciences is a Life Sciences consulting partner for pharma, biotech and healthcare organizations in The Netherlands.” Source: RevenueBase Database · checked Sep 19, 2026
11	Ofichem Group	Indirect evidence	Ter Apel, NetherlandsHQ checked Sep 19, 2026	51-200	38 contacts →
	Indirect evidence “Ofichem is a European-centred CDMO that pharma teams count on for flexible, reliable supply.” Source: RevenueBase Database · checked Sep 19, 2026
12	Single Cell Discoveries	Partial evidence	Utrecht, NetherlandsHQ checked Sep 19, 2026	11-50	36 contacts →
	Partial evidence “Single Cell Discoveries is the leading single-cell sequencing CRO providing high-impact insights to biopharmaceutical companies, health systems, and academic research centers…” Source: RevenueBase Database · checked Sep 19, 2026
13	Interdos	Indirect evidence	Geleen, NetherlandsHQ checked Sep 19, 2026	11-50	36 contacts →
	Indirect evidence “Interdos is part of the Basic Pharma Group located at the Brightlands Chemelot Campus in Geleen, the Netherlands.” Source: RevenueBase Database · checked Sep 19, 2026
14	Trueson	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “Trueson are experts in Life Sciences solutions and services.” Source: RevenueBase Database · checked Sep 19, 2026
15	Icon Clinical Research U.K. LTD	Indirect evidence	Schiphol-rijk, NetherlandsHQ checked Sep 19, 2026	51-200	34 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
16	Pharmo Institute, Part Of Lumanity	Indirect evidence	Utrecht, NetherlandsHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “The PHARMO Institute, part of Lumanity, uses data to derive real-life insights into value of medicines.” Source: RevenueBase Database · checked Sep 19, 2026
17	Turacoz Group	Indirect evidence	Sb, NetherlandsHQ checked Sep 19, 2026	51-200	29 contacts →
	Indirect evidence “Turacoz is an ISO Certified 9001:2008 medical communication company based in India & currently working with more than 30 premium global pharmaceutical companies in Asia Pacific…” Source: RevenueBase Database · checked Sep 19, 2026
18	Biokinetica	Partial evidence	Groningen, NetherlandsHQ checked Sep 19, 2026	51-200	27 contacts →
	Partial evidence “Biokinetica Early Phase Institute is a specialized clinical research unit conducting early phase studies in both healthy volunteers and patient populations.” Source: RevenueBase Database · checked Sep 19, 2026
19	DWISE	Partial evidence	Amsterdam, NetherlandsHQ checked Sep 19, 2026	11-50	27 contacts →
	Partial evidence “The premium research services delivered by DWise provide a unique approach to outsourced research & data transformation for technology companies, research agencies & corporate…” Source: RevenueBase Database · checked Sep 19, 2026
20	OCS Life Sciences	Indirect evidence	S-hertogenbosch, NetherlandsHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “OCS Life Sciences is a specialist business unit of OCS Consulting in the Netherlands that focuses on bringing high-value expertise and services to its life sciences clients.” Source: RevenueBase Database · checked Sep 19, 2026
21	Stichting Beoordeling Ethiek Biomedisch Onderzoek Bebo	Indirect evidence	Assen, NetherlandsHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence “De Stichting Beoordeling Ethiek Biomedisch Onderzoek (BEBO) te Assen, is een onafhankelijke, niet-instellingsgebonden Medische Ethische Toetsings Commissie (METC), ingesteld om…” Source: RevenueBase Database · checked Sep 19, 2026
22	Peregrion	Indirect evidence	Leiden, NetherlandsHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Peregrion is a specialized CRO that supports the acceleration and de-risking of drug development programs.” Source: RevenueBase Database · checked Sep 19, 2026
23	WCN	Partial evidence	Utrecht, NetherlandsHQ checked Sep 19, 2026	1-10	24 contacts →
	Partial evidence “Collaborating with WCN means access to a nationwide network of reliable clinical research teams and centralized processes.” Source: RevenueBase Database · checked Sep 19, 2026
24	Cr2o Clinical CRO	Strong evidence	Maarssen, NetherlandsHQ checked Sep 19, 2026	51-200	22 contacts →
	Strong evidence “CR2O is a full-service Contract Research Organization.” Source: RevenueBase Database · checked Sep 19, 2026
25	Mercachemsyncom	Strong evidence	Nijmegen, NetherlandsHQ checked Sep 19, 2026	201-500	19 contacts →
	Strong evidence “Symeres is the leading mid-sized European Contract Research Organization for your drug-discovery and development challenges.” Source: RevenueBase Database · checked Sep 19, 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: contract research organizations. 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 contract research organizations.
Partial evidence: Its own public description names part of contract research organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract research organizations. 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 148 contract research organizations based in the Netherlands

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Contract research organizations based in the Netherlands at a glance

As of Sep 19, 2026

49.1%Verified-email coverage

18.9Average contacts per company

1-10Median size (employees)

9.5%Largest-city concentration · Amsterdam

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 148 companies.

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 contract research organizations, 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.
What qualifies: Companies headquartered in the Netherlands whose own description of what they do matches “contract research organizations”. 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 contract research organizations), 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 contract research organizations, and records with no verified work email. Companies headquartered outside Netherlands are excluded even when they keep an office there.
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, 1,373 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 19, 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.

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 contract research organizations, 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 contract research organizations are there based in the Netherlands?

RevenueBase identified 148 contract research organizations headquartered in the Netherlands 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?

Symeres, headquartered in Nijmegen, tops this list with the largest team on record.

Which city has the most contract research organizations?

Amsterdam leads with 14 headquartered companies, followed by Utrecht (7) and Groningen (5).

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 1,373 verified decision-maker contacts tracked across these 148 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 19, 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.