Company lists · Data verified August 2026

Top 25 Constitutional law firms based in the Netherlands

Name: Constitutional law firms based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 119 companies tracked

There are 119 constitutional law firms headquartered in the Netherlands (RevenueBase, August 2026). RevenueBase tracks 999 professional contacts across them, including 478 with verified work emails and 59 with mobile numbers. Amsterdam is the largest hub.

This list covers constitutional law firms headquartered in the Netherlands, 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.

119Companies

999Contacts tracked

478Verified emails

59Mobile numbers

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The 25 largest constitutional law firms based in the Netherlands

Ranked by team size

Top 25 of 119 constitutional law firms based in the Netherlands, 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	Pels Rijcken	Den Haag	201-500	323	228
2	AK Advocaten	Tilburg	51-200	66	19
3	Wille Donker Advocaten	Nd	11-50	40	14
4	VAN AS Advocaten	Uden	11-50	38	28
5	Berntsen Mulder Advocaten	n/a	11-50	35	12
6	TRC Advocaten	Veldhoven	11-50	29	19
7	Adelmeijer Hoyng Advocaten	Hc	11-50	28	16
8	Salomons Beelaerts Advocaten	n/a	11-50	17	6
9	Domini Advocaten	Ah	11-50	13	11
10	VAN DER Kooij Besters Advocaten	Amsterdam	11-50	13	8
11	Ovidius	Gw	11-50	11	9
12	Defenz Advocaten, Drachten	Drachten	11-50	11	7
13	Hameleers Antonides Advocaten	Jb	11-50	9	6
14	Stellingwerf VAN Beek & Drosten Advocaten EN Bedrijfsadviseurs	Enschede	11-50	9	5
15	VAN Ardenne & Crince LE ROY Advocaten N.V	Rotterdam	11-50	8	5
16	Spraaq Advocaten	Rg	1-10	8	5
17	Aves Advocaten	Ar	11-50	8	1
18	DE Singel Advocaten	Enschede	11-50	7	5
19	Hamer Advocaten	Hj	1-10	7	5
20	REX Advocaten	Wijchen	1-10	7	4
21	Groenendijk EN Kloppenburg Advocaten	Amsterdam	11-50	7	3
22	JAW Advocaten	The Hague	11-50	6	4
23	Legal Sharks Advocaten	Gb	1-10	6	2
24	Drykoningen Advocaten	Utrecht	1-10	5	4
25	Lexpert Advocaten	Kj	1-10	5	3

Showing 25 of 119 constitutional law firms based in the Netherlands

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Constitutional law firms based in the Netherlands at a glance

As of Aug 28, 2026

1-10Median size (employees)

AmsterdamLargest hub · 9 HQs

59Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Constitutional law firms by metro

Metro	Companies
Constitutional law firms in Amsterdam	9
Constitutional law firms in Rotterdam	9
Constitutional law firms in Den Haag	6
Constitutional law firms in Utrecht	5
Constitutional law firms in Enschede	4
Constitutional law firms in Nijmegen	3
Constitutional law firms in Alkmaar	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 “constitutional law firms”, with match quality audited by blind human judging, and headquartered in the Netherlands.
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; 2 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 constitutional law firms are there based in the Netherlands?

There are 119 constitutional law firms headquartered in the Netherlands as of August 2026 (RevenueBase).

What is the largest company on this list?

Pels Rijcken, headquartered in Den Haag, tops this list with the largest team on record.

Which city has the most constitutional law firms?

Amsterdam leads with 9 headquartered companies, followed by Rotterdam (9) and Den Haag (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 478 verified decision-maker contacts tracked across these 119 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.