Company lists · Data refreshed September 2026
Top 25 Consultancy services based in Nantes, France
RevenueBase identified 275 consultancy services headquartered in Nantes, France as of September 2026 and tracks 7,551 professional contacts across them, including 603 with verified work emails. Paris is the largest hub.
This list covers consultancy services 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 24, 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 consultancy services 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 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 97 contacts → | ||||
Indirect evidence “Support organizations in the mastery and success of their transformations.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 54 contacts → | ||||
Indirect evidence “Le Groupe Huit intervient depuis 1967, comme conseil auprès des gouvernements, des collectivités locales et des organismes de financement internationaux, dans plusieurs domaines…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 49 contacts → | ||||
Indirect evidence “Nous, c’est One Ace.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 8 | 46 contacts → | ||||
Indirect evidence “Société d'Ingénierie et de Conseil spécialisée en Génie Industriel.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 29 contacts → | ||||
Indirect 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 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 28 contacts → | ||||
Indirect evidence “OKSIGEN est une société spécialisée en Maîtrise de l'Energie, nous accompagnons nos clients professionnels sur 3 thématiques - Stratégie bas carbone *- Stratégie d'efficacité…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 22 contacts → | ||||
Indirect evidence “Chez Disobey, nous croyons qu’une communication réussie allie créativité, émotions et impact positif.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 17 contacts → | ||||
Indirect evidence “Mieux vaut Tête bien faite que tête bien pleine – M.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 15 contacts → | ||||
Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 14 contacts → | ||||
Indirect evidence “Cabinet d'Expertise Comptable sur Nantes.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 13 contacts → | ||||
Indirect evidence “Canévet et associés a pour vocation d’accompagner les entreprises et institutions publiques, les universités et grandes écoles, dans leur stratégie de communication et la…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Indirect evidence “Créé en 2012, AMNIS Consulting est un cabinet de conseil en management et projets de transformation.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 9 contacts → | ||||
Indirect evidence “TEODYM vous aide à vendre PLUS et MIEUX votre établissement Vous développez votre activité et vous souhaitez en maximiser le profit TEODYM est votre partenaire de proximité 🤝…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 contacts → | ||||
Strong evidence “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: RevenueBase Database · checked Sep 24, 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: consultancy services. 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 consultancy services.
- Partial evidence
- Its own public description names part of consultancy services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name consultancy services. 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 275 consultancy services based in Nantes, France
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Consultancy services based in Nantes, France at a glance
As of Sep 24, 2026Companies by employee count
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 275 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 consultancy services, 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 “consultancy services”. 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 consultancy services), 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 consultancy services, 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, 603 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 24, 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.
Consultancy services by metro in France
- Consultancy services in Paris4209
- Consultancy services in Lyon654
- Consultancy services in Toulouse341
- Consultancy services in Bordeaux277
- Consultancy services in Nantes275
- Consultancy services in Marseille205
- Consultancy services in Montpellier181
- Consultancy services in Lille171
- Consultancy services in Strasbourg160
- Consultancy services in Rennes155
- Consultancy services in Boulogne-Billancourt127
- Consultancy services in Nice88
- Consultancy services in Courbevoie85
- Consultancy services in Neuilly-Sur-Seine85
- Consultancy services in Aix-En-Provence83
- Consultancy services in Angers81
- Consultancy services in Annecy74
- Consultancy services in Aix En Provence72
- Consultancy services in Grenoble67
- Consultancy services in Versailles65
- Consultancy services in Levallois-Perret60
- Consultancy services in Tours56
- Consultancy services in Metz52
- Consultancy services in Boulogne Billancourt51
- Consultancy services in Caen51
- Consultancy services in Reims51
- Consultancy services in Rouen51
- Consultancy services in Clermont-Ferrand49
- Consultancy services in Puteaux49
- Consultancy services in Villeurbanne47
- Consultancy services in France44
- Consultancy services in Orleans44
- Consultancy services in Issy-Les-Moulineaux43
- Consultancy services in Neuilly Sur Seine42
- Consultancy services in La Rochelle40
- Consultancy services in Le Mans40
- Consultancy services in Perpignan40
- Consultancy services in Avignon39
- Consultancy services in Besancon37
- Consultancy services in Dijon37
- Consultancy services in Nanterre37
- Consultancy services in Suresnes37
- Consultancy services in Merignac33
- Consultancy services in Valence33
- Consultancy services in Nimes31
- Consultancy services in Vincennes31
- Consultancy services in Amiens30
- Consultancy services in Brest30
- Consultancy services in Montrouge30
- Consultancy services in Nancy30
- Consultancy services in Limoges28
- Consultancy services in Biarritz27
- Consultancy services in Rueil-Malmaison27
- Consultancy services in Levallois Perret26
- Consultancy services in Lorient26
- Consultancy services in Mulhouse25
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 consultancy services, 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 consultancy services are there based in Nantes, France?
RevenueBase identified 275 consultancy services 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 consultancy services?
Paris leads with 4209 headquartered companies, followed by Lyon (654) and Toulouse (341).
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 603 verified decision-maker contacts tracked across these 275 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 24, 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.
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