Company lists · Data refreshed September 2026
Top 25 Consulting firms based in Nantes, France
RevenueBase identified 262 consulting firms headquartered in Nantes, France as of September 2026 and tracks 1,684 professional contacts across them, including 724 with verified work emails and 64 with mobile numbers. Paris is the largest hub.
This list covers 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 8, 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.
The 25 largest consulting firms based in Nantes, France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 191 contacts → | ||||
Indirect evidence “Cocerto : votre partenaire de proximité pour un accompagnement à 360° Chez Cocerto, nous plaçons la proximité et la réactivité au cœur de notre accompagnement.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 3 | 97 contacts → | ||||
Indirect evidence “Support organizations in the mastery and success of their transformations.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 7 | 49 contacts → | ||||
Indirect evidence “Nous, c’est One Ace.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 10 | 46 contacts → | ||||
Indirect evidence “Société d'Ingénierie et de Conseil spécialisée en Génie Industriel.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 12 | 27 contacts → | ||||
Indirect evidence “SAP solutions integrator” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 14 | 20 contacts → | ||||
Indirect evidence “POD est un cabinet de conseil spécialisé dans la transaction des pharmacies.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 contacts → | ||||
Indirect evidence “Mieux vaut Tête bien faite que tête bien pleine – M.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 21 | 15 contacts → | ||||
Indirect evidence “FIGURA est un cabinet d'expertise comptable et de commissariat aux comptes indépendant, présent depuis de plus de 35 ans à Nantes et Ancenis.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 22 | 15 contacts → | ||||
Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 23 | 14 contacts → | ||||
Indirect evidence “Cabinet d'Expertise Comptable sur Nantes.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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 8, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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 8, 2026Thanks. The Data Team will review it. | |||||
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 firms. 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 firms.
- Partial evidence
- Its own public description names part of consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name consulting firms. 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 262 consulting firms based in Nantes, France
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Consulting firms based in Nantes, France at a glance
As of Sep 8, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 11.0dCompany record updated
Median 47.0dHow 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 firms, 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 firms”. 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 firms), 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 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 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, 724 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 8, 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 firms by metro in France
- Consulting firms in Paris5250
- Consulting firms in Lyon730
- Consulting firms in Toulouse337
- Consulting firms in Bordeaux305
- Consulting firms in Nantes267
- Consulting firms in Marseille216
- Consulting firms in Lille178
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 consulting firms, 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 consulting firms are there based in Nantes, France?
RevenueBase identified 262 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?
Cocerto, headquartered in Nantes, 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 724 verified decision-maker contacts tracked across these 262 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 8, 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.