Company lists · Data refreshed September 2026

Top 25 Operations consulting firms based in Nantes, France

Name: Operations consulting firms based in Nantes, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 104 companies tracked

RevenueBase identified 104 operations consulting firms headquartered in Nantes, France as of September 2026 and tracks 590 professional contacts across them, including 233 with verified work emails. Paris is the largest hub.

This list covers operations consulting firms headquartered in Nantes, France, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

104Companies

590Contacts tracked

233Verified emails

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The 25 largest operations consulting firms based in Nantes, France

Ranked by team size

Top 25 of 104 operations consulting firms based in Nantes, France, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names operations consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Exeis ConseilIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	51-200	97
	“Support organizations in the mastery and success of their transformations.” Source: company website · checked Sep 5, 2026
2	CaptenIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	51-200	62
	“Cabinet de conseil et d’ingénierie spécialisé dans les métiers du Système d’Information et de l’Industrie, créé en janvier 2017 à Nantes, Capten propose 3 offres afin…” Source: company website · checked Sep 5, 2026
3	Audencia Junior ConseilIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	11-50	49
	“Audencia Junior Conseil, Junior Entreprise de l’école de commerce Audencia Nantes, réalise depuis plus de 30 ans des prestations de conseil : étude de marché, étude de…” Source: company website · checked Sep 5, 2026
4	KasadennIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	11-50	46
	“Société d'Ingénierie et de Conseil spécialisée en Génie Industriel.” Source: company website · checked Sep 5, 2026
5	SK WillingPartial evidence	Nantes, FranceHQ checked Sep 5, 2026	11-50	29
	“Cabinet de conseil en organisation et management, SK Consulting est implanté à Nantes et Niort et accompagne de nombreux acteurs de la région Grand Ouest dans leurs projets de…” Source: company website · checked Sep 5, 2026
6	Nepsio ConseilIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	11-50	20
	“Acteur de référence en Pays de la Loire, NEPSIO Conseil est un cabinet de stratégie et de conseil spécialisé en transformation (organisationnelle, RH et digitale).” Source: company website · checked Sep 5, 2026
7	EliteorgaIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	11-50	18
	“EliteOrga est un cabinet de conseil et formation en organisation et management à Nantes et à Lille.” Source: company website · checked Sep 5, 2026
8	Cayola ConsultingIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	11-50	15
	“CAYOLA est un cabinet indépendant accompagnant dirigeants et entreprises dans leurs enjeux stratégiques, économiques, financiers et organisationnels.” Source: company website · checked Sep 5, 2026
9	InöweenoIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	9
	“Modèle hybride entre le savoir-faire métier des cabinets de conseil et la maîtrise technologique des ESN, Inöweeno et ses Digital Lovers sont à vos côtés sur tous les aspects de…” Source: company website · checked Sep 5, 2026
10	Amnis ConsultingPartial evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	9
	“Créé en 2012, AMNIS Consulting est un cabinet de conseil en management et projets de transformation.” Source: company website · checked Sep 5, 2026
11	Artesial ConsultantsIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	8
	“Artésial consultants est un cabinet de conseil spécialisé dans la performance industrielle des industries de l’agro-alimentaire, de la cosmétique et de la pharmacie.” Source: company website · checked Sep 5, 2026
12	The Human Consulting GroupPartial evidence	Nantes, FranceHQ checked Sep 5, 2026	11-50	8
	“The Human Consulting Group - HCG, Société de Conseil en stratégie spécialisée en Relation Client.” Source: company website · checked Sep 5, 2026
13	leando.techIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	7
	“Vous avez une idée, une innovation ou une transformation à porter?” Source: company website · checked Sep 5, 2026
14	UDWIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	7
	“Up Down Wind Think, Plan and Excute your Performance 20 consultants for U!” Source: company website · checked Sep 5, 2026
15	Majorelle RHIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	11-50	5
	“Majorelle RH est un cabinet de conseil en stratégie et organisation RH.” Source: company website · checked Sep 5, 2026
16	D-Side PerformanceIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	4
	“é?” Source: company website · checked Sep 5, 2026
17	DNS EngineeringIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	3
	“DNS Engineering intervient auprès des acteurs de la construction depuis 2014 suivant plusieurs approches - Du conseil organisationnel et/ou contractuel- Des missions en phase…” Source: company website · checked Sep 5, 2026
18	ActyveaIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	3
	“Cabinet conseil en stratégie créé à Nantes, Actyvea accompagne depuis 2010 les PME et ETI à développer des stratégies innovantes, concevoir des offres innovantes centrées clients…” Source: company website · checked Sep 5, 2026
19	Belles-UsinesIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	3
	“Notre métier : vous aider à améliorer les performances de vos ateliers, entrepôts… Vous cherchez à diminuer vos coûts de revient, à réduire vos stocks, à améliorer votre taux de…” Source: company website · checked Sep 5, 2026
20	Novup SASIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	3
	“We support companies in their search for improvement and innovation to (re) boost their activities.” Source: company website · checked Sep 5, 2026
21	AdvaliansIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	2
	“Né de la volonté de guider les entreprises dans leurs décisions stratégiques en marketing, communication et digital, le Cabinet Advalians s’érige comme un phare dans un monde en…” Source: company website · checked Sep 5, 2026
22	Sycomore AdvisoryIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	2
	“Sycomore Advisory, ce sont quatre domaines d'expertise complémentaires - Services de transaction / Transaction services * Évaluation d'entreprise : obtenir une valeur objective de…” Source: company website · checked Sep 5, 2026
23	OneeyeIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	2
	“OneEye – entreprise de conseil en relation client accompagne les marques sur les défis opérationnels de l’amélioration de l’expérience client!” Source: company website · checked Sep 5, 2026
24	Digital'ease & VousIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	1
	“Vous perdez en productivité au quotidien?” Source: company website · checked Sep 5, 2026
25	Cabinet EquilibreIndirect evidence	Nantes, FranceHQ checked Sep 5, 2026	1-10	1
	“Conseil et accompagnement en reprise d'entreprise” Source: company website · checked Sep 5, 2026

Showing 25 of 104 operations consulting firms based in Nantes, France

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Operations consulting firms based in Nantes, France at a glance

As of Sep 5, 2026

1-10Median size (employees)

ParisLargest hub · 2159 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole France list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Nantes, over 104 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 operations consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Nantes, France whose own description of what they do matches “operations consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among operations consulting firms, and records with no verified work email. Companies headquartered outside Nantes 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 an evidence 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, 233 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 5, 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.

Operations consulting firms by metro in France

Operations consulting firms in Paris2159
Operations consulting firms in Lyon290
Operations consulting firms in Toulouse144
Operations consulting firms in Bordeaux114
Operations consulting firms in Nantes104
Operations consulting firms in Marseille82
Operations consulting firms in Lille78
Operations consulting firms in Boulogne-Billancourt71
Operations consulting firms in Neuilly-Sur-Seine60
Operations consulting firms in Strasbourg59
Operations consulting firms in Courbevoie52
Operations consulting firms in Montpellier50
Operations consulting firms in Rennes50
Operations consulting firms in Puteaux33
Operations consulting firms in Versailles33
Operations consulting firms in Levallois-Perret32
Operations consulting firms in Boulogne Billancourt30
Operations consulting firms in Aix En Provence28
Operations consulting firms in Angers28
Operations consulting firms in Aix-En-Provence27
Operations consulting firms in Issy-Les-Moulineaux26
Operations consulting firms in Grenoble25
Operations consulting firms in Neuilly Sur Seine25

Frequently asked

How many operations consulting firms are there based in Nantes, France?

RevenueBase identified 104 operations consulting firms headquartered in Nantes, France 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?

Exeis Conseil, headquartered in Nantes, tops this list with the largest team on record.

Which city has the most operations consulting firms?

Paris leads with 2159 headquartered companies, followed by Lyon (290) and Toulouse (144).

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 233 verified decision-maker contacts tracked across these 104 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 5, 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 SmartSearch, 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.