Company lists · Data verified August 2026

Top 25 Consulting firms based in France

Name: Consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 17,929 companies tracked

There are 17,929 consulting firms headquartered in France (RevenueBase, August 2026). RevenueBase tracks 219,088 professional contacts across them, including 76,368 with verified work emails and 8,216 with mobile numbers. Paris is the largest hub.

This list covers consulting firms headquartered in France, 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.

17,929Companies

219,088Contacts tracked

76,368Verified emails

8,216Mobile numbers

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The 25 largest consulting firms based in France

Ranked by team size

Top 25 of 17,929 consulting firms based in France, 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	In Extenso	Lyon	5,001-10,000	3,308	1,953
2	Arthur D. Little	Paris	1,001-5,000	2,193	1,186
3	Davidson Consulting	Lille	1,001-5,000	1,852	899
4	Infotel	Niort	1,001-5,000	1,764	863
5	Mc2i	n/a	1,001-5,000	1,672	1,031
6	Abylsen	Lyon	1,001-5,000	1,576	721
7	Apside	Boulogne-Billancourt	1,001-5,000	1,538	929
8	Vulcain Engineering Group	n/a	5,001-10,000	1,484	879
9	AUSY	Cherbourg-En-Cotentin	5,001-10,000	1,062	164
10	TGS France	Nantes	1,001-5,000	1,057	636
11	COGEP	Saint-Doulchard	1,001-5,000	1,050	683
12	Capitole	Marcq-En-Baroeul	1,001-5,000	1,007	256
13	T&s Technology & Strategy	Schiltigheim	1,001-5,000	946	323
14	Viveris	Massy	1,001-5,000	840	446
15	Orcom Cabinet D'expertise Comptable, Audit ET Conseil	Paris	1,001-5,000	805	433
16	Synchrone FR	Cournon-Dauvergne	1,001-5,000	803	434
17	PKF Arsilon	Lyon	501-1,000	774	397
18	Visiativ	Saint-Priest	1,001-5,000	756	451
19	Square Management	Neuilly Sur Seine	501-1,000	718	505
20	Groupe Intm	Levallois-Perret	1,001-5,000	716	2
21	Altman Solon	Paris	501-1,000	680	457
22	Orientaction	Paris	501-1,000	673	5
23	CF	Bordeaux	1,001-5,000	663	288
24	Aptiskills	Nantes	1,001-5,000	659	332
25	Cbre France	Paris	1,001-5,000	655	382

Showing 25 of 17,929 consulting firms based in France

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Consulting firms based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 5250 HQs

8,216Contacts with mobile numbers

368Emails re-verified in last 30 days

Companies by employee count

1-10

13,676

11-50

2,981

51-200

736

201-500

203

501-1,000

1,001-5,000

5,001-10,000

Consulting firms by metro

Metro	Companies
Consulting firms in Paris	5250
Consulting firms in Lyon	730
Consulting firms in Toulouse	337
Consulting firms in Bordeaux	305
Consulting firms in Nantes	267
Consulting firms in Marseille	216
Consulting firms in Lille	178

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 “consulting firms”, with match quality audited by blind human judging, and headquartered in France.
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; 368 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 consulting firms are there based in France?

There are 17,929 consulting firms headquartered in France as of August 2026 (RevenueBase).

What is the largest company on this list?

In Extenso, headquartered in Lyon, tops this list with the largest team on record.

Which city has the most consulting firms?

Paris leads with 5250 headquartered companies, followed by Lyon (730) and Toulouse (337).

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 76,368 verified decision-maker contacts tracked across these 17,929 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.