Company lists · Data refreshed September 2026

Top 25 Consulting companies based in Nantes, France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 7, 2026 239 companies tracked

This directory lists 239 consulting companies based in Nantes, France, with 1,424 business contacts and 570 email addresses. Across France, Paris is the largest hub for this category (4,972 companies); Nantes has 239.

Consulting companies provide expert advice, analysis, and implementation support to organizations in areas such as management, operations, technology, finance, or specialized industries. This list covers companies that provide consulting services to organizational clients, including general management, operational, technical, financial, and industry-specific advisory services. Ranked by team size, largest first. Data current as of September 7, 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 7, 2026 86% judged on-target in blind review

239Companies

1,424Contacts tracked

570Verified emails

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The 25 largest consulting companies based in Nantes, France

Ranked by team size

Top 25 of 239 consulting companies based in Nantes, France, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to consulting companies: 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	Valeuriad	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	51-200	145 contacts →
	Indirect evidence “Valeuriad - valeurs, innovation & digital Notre vocation Plus qu’une compétence technique, nous apportons à nos clients un réel savoir-faire et savoir-être.” Source: RevenueBase Database · checked Sep 7, 2026
2	Exeis Conseil	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	51-200	97 contacts →
	Indirect evidence “Support organizations in the mastery and success of their transformations.” Source: RevenueBase Database · checked Sep 7, 2026
3	Capten	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	51-200	62 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 7, 2026
4	CAHRA	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	57 contacts →
	Indirect evidence “Depuis 2009, CAHRA, rattachée au groupe UPWARD, développe et porte un métier : le management de la transition.” Source: RevenueBase Database · checked Sep 7, 2026
5	OZEO	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	51-200	51 contacts →
	Indirect evidence “Cabinet d'Expertise Comptable né du rapprochement des deux cabinets Fradin & Associés et Secogerec, installés au centre ville de Nantes et en Sud Loire, Ozéo travaille aux côtés…” Source: RevenueBase Database · checked Sep 7, 2026
6	ONE ACE Expertise Comptable	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	51-200	49 contacts →
	Indirect evidence “Nous, c’est One Ace.” Source: RevenueBase Database · checked Sep 7, 2026
7	Audencia Junior Conseil	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	49 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 7, 2026
8	QONEX	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	47 contacts →
	Indirect evidence “QONEX est une société de conseil créée en 2021 spécialisée dans l’ingénierie et les technologies de l’information.” Source: RevenueBase Database · checked Sep 7, 2026
9	Kasadenn	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	46 contacts →
	Indirect evidence “Société d'Ingénierie et de Conseil spécialisée en Génie Industriel.” Source: RevenueBase Database · checked Sep 7, 2026
10	SK Willing	Strong evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	29 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 7, 2026
11	Rubix Consulting	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	27 contacts →
	Indirect evidence “SAP solutions integrator” Source: RevenueBase Database · checked Sep 7, 2026
12	LGP Conseil	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	21 contacts →
	Indirect evidence “Nous sommes un cabinet de conseil en management des organisations animé par une conviction profonde : la performance durable de l’entreprise passe avant tout par son développement…” Source: RevenueBase Database · checked Sep 7, 2026
13	Nepsio Conseil	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	20 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 7, 2026
14	Eliteorga	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	18 contacts →
	Indirect evidence “EliteOrga est un cabinet de conseil et formation en organisation et management à Nantes et à Lille.” Source: RevenueBase Database · checked Sep 7, 2026
15	Beneka	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	17 contacts →
	Indirect evidence “Mieux vaut Tête bien faite que tête bien pleine – M.” Source: RevenueBase Database · checked Sep 7, 2026
16	Yole Systemplus	Strong evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	16 contacts →
	Strong evidence “SYSTEM PLUS CONSULTING is a company specialized in the technology and cost analysis of electronics components and devices, founded in 1993 headquartered in Nantes, France.” Source: RevenueBase Database · checked Sep 7, 2026
17	Alturion	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	16 contacts →
	Indirect evidence “Alturion, cabinet de Conseil en Ressources Humaines spécialisé dans l’approche directe de Cadres et Cadres Dirigeants, propose une expertise poussée dans trois domaines : les…” Source: RevenueBase Database · checked Sep 7, 2026
18	Cayola Consulting	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	15 contacts →
	Indirect evidence “CAYOLA est un cabinet indépendant accompagnant dirigeants et entreprises dans leurs enjeux stratégiques, économiques, financiers et organisationnels.” Source: RevenueBase Database · checked Sep 7, 2026
19	Holenek Ingénierie	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	15 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 7, 2026
20	KER	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	14 contacts →
	Indirect evidence “Cabinet d'Expertise Comptable sur Nantes.” Source: RevenueBase Database · checked Sep 7, 2026
21	Modalb	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	11-50	12 contacts →
	Indirect evidence “ModalB accompagne les entreprises dans leurs projets numériques 🤝 ModalB est une société de conseil et de service en IT qui met son expertise au service de ses clients pour…” Source: RevenueBase Database · checked Sep 7, 2026
22	Reso Services	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	1-10	11 contacts →
	Indirect evidence “RESO Services, filiale du Groupement d’Employeurs RESO France, est un cabinet conseil en ressources humaines.” Source: RevenueBase Database · checked Sep 7, 2026
23	Vendredi Treize Notariat Cessions Associations Recrutements	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	1-10	11 contacts →
	Indirect evidence “Ne laissez pas votre carrière au hasard." VENDREDI TREIZE© est un cabinet Français dédié au Notariat offrant une approche complète et sur-mesure du conseil pour les notaires …” Source: RevenueBase Database · checked Sep 7, 2026
24	PH Partners	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	1-10	9 contacts →
	Indirect evidence “PH Partners est une société leader dans le conseil stratégique et opérationnel en restauration.” Source: RevenueBase Database · checked Sep 7, 2026
25	Inöweeno	Indirect evidence	Nantes, FranceHQ checked Sep 7, 2026	1-10	9 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 7, 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: consulting companies. 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 consulting companies.
Partial evidence: Its own public description names part of consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name consulting companies. 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 239 consulting companies based in Nantes, France

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Consulting companies based in Nantes, France at a glance

As of Sep 7, 2026

40.0%Verified-email coverage

6.0Average contacts per company

1-10Median size (employees)

Sep 7, 2026Page data refreshed

Companies by employee count

1-10

195

11-50

51-200

501-1,000

Email recency for this list is measured across the whole France list rather than for Nantes, so it is reported there. Company counts and contact totals on this page are exact for Nantes, over 239 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 consulting companies, 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 Nantes, France whose own description of what they do matches “consulting companies”. 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 consulting companies), 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 consulting companies, 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 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, 570 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 7, 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.

Consulting companies by metro in France

Frequently asked

How many consulting companies are based in Nantes, France?

The list contains 239 consulting companies based in Nantes, France.

Which city in France has the most consulting companies?

Paris leads France with 4,972 headquartered companies, followed by Lyon (682) and Toulouse (331). Nantes has 239.

How can I find contacts at consulting companies?

The directory includes 1,424 business contacts and 570 email addresses for the listed consulting companies.

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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.