Company lists · Data refreshed September 2026
Top 25 Consultancy firms based in Bilbao, Spain
RevenueBase identified 134 consultancy firms headquartered in Bilbao, Spain as of September 2026 and tracks 1,040 professional contacts across them, including 147 with verified work emails. Across Spain, Madrid is the largest hub for this category (2,136 companies); Bilbao has 134.
This list covers consultancy firms headquartered in Bilbao, Spain, 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 firms based in Bilbao, Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 294 contacts → | ||||
Indirect evidence “SERIKAT es una compañía de consultoría orientada a la creación de valor en nuestros clientes a través del tratamiento de la información.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 39 contacts → | ||||
Strong evidence “GCON4, an official Unit4 Elite Partner, was founded by several senior implementation consultants of the leading ERP solution - Unit4 ERP (formerly known as Agresso / Unit4…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 35 contacts → | ||||
Indirect evidence “IDOM es una empresa líder en servicios profesionales de Consultoría, Ingeniería y Arquitectura que se distingue por ofrecer a sus clientes un nivel de compromiso extraordinario…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 31 contacts → | ||||
Indirect evidence “ekintzailetzan espezializatuta dagoen aholkularitza-enpresa bat da, prestakuntza eskaintzen ditugu, ordezkaritza daukagu- es una consultora especializada en.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 30 contacts → | ||||
Indirect evidence “Expertos en Consultoría de Negocio, Procesos de Assessment y Mejora Continua.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 30 contacts → | ||||
Indirect evidence “Confianz es una asesoría y consultoría de empresas, fundada en 1994, con oficinas en Madrid, Bilbao y San Sebastián.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 7 | 22 contacts → | ||||
Indirect evidence “Somos una Consultoría de Dirección, especializada en métodos de gestión avanzada.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 8 | 22 contacts → | ||||
Indirect evidence “20 años ayudando a empresas a decidir mejor, competir mejor y dejar huella positiva en su entorno.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 20 contacts → | ||||
Indirect evidence “M.A.C.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 14 contacts → | ||||
Strong evidence “CDI Consultants es una empresa de consultoría especializada en la planificación, gestión, seguimiento y evaluación de políticas, programas y proyectos de inversión pública CDI…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 10 contacts → | ||||
Indirect evidence “ITAC is a leading International Consulting Firm providing global solutions for Infrastructure Development.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 10 contacts → | ||||
Indirect evidence “VK Comunicación se constituyó formalmente en el mes de diciembre de 1998, como iniciativa personal de Virginia Knörr Barandiaran, que en los años inmediatamente anteriores había…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 9 contacts → | ||||
Indirect evidence “Los integrantes del equipo de ACYP trabajamos día a día estrechamente con nuestros clientes, de forma que podamos ofrecerles un trato profesional a la vez que cercano y personal.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 8 contacts → | ||||
Indirect evidence “En AMS corporate asesoramos a empresas, acreedores, e inversores, en situaciones complejas desde 2002.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 contacts → | ||||
Indirect evidence “En BISCAY CONSULTING tenemos como prioridad reportar a las corporaciones ese mix tan difícil: • CALIDAD a través del conocimiento de la normativa, • RIGOR TÉCNICO que reporte…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 7 contacts → | ||||
Strong evidence “Let me introduce you to Inoberica, a leading company in the field of sales consultancy and translation services.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Indirect evidence “En MB Asesores nuestro principal objetivo, presente desde nuestros comienzos en 2008, es acompañarte en todo momento, prestando servicios jurídicos y de asesoramiento integral…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Indirect evidence “El asesoramiento/implantación de todo tipo de procesos conducentes al Desarrollo de proyectos Estratégicos.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 contacts → | ||||
Indirect evidence “En Delegate Solutions estamos de acuerdo:"lo único constante en la vida es el cambio".” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Indirect evidence “Serval Nervión lo formamos un gran equipo de profesionales con amplia y dilatada experiencia a través de la cual podemos adaptarnos a las exigencias de nuestros clientes…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Indirect evidence “Atarrabi Kide es un grupo de servicios profesionales, especializados en.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Indirect evidence “HUB Advisory Partners nace del espíritu inquieto de varios profesionales con larga trayectoria el la estrategia de negocio y corporativa.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Indirect evidence “Asem Indafisa es el resultado de la fusión de dos despachos profesionales de trayectoria similar con más de 20 años de experiencia en el sector de asesorías y gestión de empresas.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Indirect evidence “in2destination collaborates in the sustainable construction of territories through tourism.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Indirect evidence “Somos una consultora de apoyo estratégico en el sector salud especializada en la gestión del cambio y la transformación organizativa.” 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 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 consultancy firms.
- Partial evidence
- Its own public description names part of consultancy firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name consultancy 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 134 consultancy firms based in Bilbao, Spain
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Consultancy firms based in Bilbao, Spain at a glance
As of Sep 24, 2026Companies by employee count
Email recency for this list is measured across the whole Spain list rather than for Bilbao, so it is reported there. Company counts and contact totals on this page are exact for Bilbao, over 134 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 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 Bilbao, Spain whose own description of what they do matches “consultancy 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 consultancy 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 consultancy firms, and records with no verified work email. Companies headquartered outside Bilbao 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, 147 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 firms by metro in Spain
- Consultancy firms in Madrid2136
- Consultancy firms in Barcelona1373
- Consultancy firms in Valencia346
- Consultancy firms in Sevilla217
- Consultancy firms in Zaragoza139
- Consultancy firms in Murcia130
- Consultancy firms in Alicante116
- Consultancy firms in Vigo99
- Consultancy firms in Granada83
- Consultancy firms in Valladolid72
- Consultancy firms in Santa Cruz De Tenerife68
- Consultancy firms in Las Palmas De Gran Canaria66
- Consultancy firms in Palma De Mallorca62
- Consultancy firms in Girona61
- Consultancy firms in Oviedo45
- Consultancy firms in Sabadell45
- Consultancy firms in Marbella44
- Consultancy firms in Seville44
- Consultancy firms in Palma42
- Consultancy firms in Terrassa40
- Consultancy firms in Las Rozas De Madrid31
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 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 consultancy firms are there based in Bilbao, Spain?
RevenueBase identified 134 consultancy firms headquartered in Bilbao, Spain 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?
Erhardt Serikat, headquartered in Bilbao, tops this list with the largest team on record.
Which city in Spain has the most consultancy firms?
Madrid leads Spain with 2,136 headquartered companies, followed by Barcelona (1,373) and Valencia (346). Bilbao has 134.
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 147 verified decision-maker contacts tracked across these 134 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.