Company lists · Data refreshed September 2026
Top 25 Iso audit companies based in Spain
RevenueBase identified 220 iso audit companies headquartered in Spain as of September 2026 and tracks 9,137 professional contacts across them, including 1,213 with verified work emails. Madrid is the largest hub.
This list covers iso audit companies headquartered in 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 20, 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 iso audit companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,690 contacts → | ||||
Indirect evidence “OCA Global is a private business group –with headquarters in Spain–, dedicated to inspection, quality control, certification, testing, consulting, and training activities.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,670 contacts → | ||||
Indirect evidence “Applus+ is a worldwide leader in the testing, inspection, and certification sector.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 961 contacts → | ||||
Indirect evidence “AENOR is a global company, that identifies and helps organizations to overcome relevant competitiveness gaps.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 298 contacts → | ||||
Indirect evidence “EQA es una entidad internacional de certificación, verificación e inspección, con más de 25 años de trayectoria.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 116 contacts → | ||||
Indirect evidence “As of 2004 and during the last 20 years, Preverisk Group has established itself within the international auditing, consultancy and training environment, servicing touristic and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 67 contacts → | ||||
Indirect evidence “Global Inspection Services (GIS) is a high performance inspection, testing & certification organization that provides services for EPC, Owners, Vendors, among other clients.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 58 contacts → | ||||
Indirect evidence “IBERCAL fue fundada en Bilbao, en Septiembre de 2002, y su experiencia es consecuencia de la intensa actividad desarrollada durante los últimos diez años, así como de la destreza…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 38 contacts → | ||||
Indirect evidence “Grupo ACMS es un grupo empresarial que opera, desde hace más de 12 años, a nivel nacional y cuya actividad principal es el diseño, implantación y mantenimiento de Sistemas de…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 36 contacts → | ||||
Indirect evidence “NQA es un organismo de certificación global que se caracteriza por proporcionar servicios de certificación y formación técnicamente avanzados y adaptados a las necesidades de toda…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 30 contacts → | ||||
Indirect evidence “LEGITEC es una organización de ámbito nacional, fundada e impulsada por varias empresas especializadas en ofrecer servicios relacionados con el cumplimiento normativo y…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 28 contacts → | ||||
Indirect evidence “For a long time, digital accessibility has been treated as a boring last-minute task.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 24 contacts → | ||||
Indirect evidence “CAVALA es un gabinete de asesoría empresarial que se dedica a la implantación, auditoría y mantenimiento de Sistemas de Gestión de Calidad, Seguridad y Salud en el Trabajo, Medio…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 23 contacts → | ||||
Indirect evidence “Anexia es una empresa que ofrece servicios de consultoría en normalización desde 2002.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 14 contacts → | ||||
Indirect evidence “International Global Certification, S.A.(IGC) es una compañía internacional de servicios de certificación, con sede central en Panamá y que presta servicios en Costa Rica…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 14 contacts → | ||||
Indirect evidence “Argano Asesores somos una empresa valenciana que nace con la misión de ofrecer a nuestros clientes un servicio de calidad y altamente especializado, que les ayude a desarrollar su…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 contacts → | ||||
Indirect evidence “ADOK CERTIFICACIÓN es una entidad acreditada para la certificación de sistemas de gestión en diversas áreas de gestión: Calidad, Medio Ambiente, Responsabilidad Social, Seguridad…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 13 contacts → | ||||
Partial evidence “Soluciones Q.E.S, somos una consultora de estrategia y operaciones experta en implementaciones ISO, ENS y SQAS.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 12 contacts → | ||||
Indirect evidence “URS SPAIN forma parte de URS Holdings, grupo líder global en certificación, con presencia en más de 60 países y miles de organizaciones certificadas en todo el mundo.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 contacts → | ||||
Indirect evidence “Somos una compañía cuya filosofía se basa en ser proactivos y ofrecer a nuestros clientes un servicio integral desde las áreas de la consultoría, formación, innovación, ingeniería…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 9 contacts → | ||||
Indirect evidence “OCASUR es un Organismo de Control Autorizado (OCA) con la acreditación Nº 437/EI642 de la Entidad Nacional de Acreditación (ENAC).” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 9 contacts → | ||||
Indirect evidence “En RC Quality siempre hemos pensado que en tu empresa "Eres lo que ofreces".” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 9 contacts → | ||||
Indirect evidence “CQM CONSULTORÍA SGV S.L enfoca su principal actividades en los Sistemas de Gestión de Integrados Calidad, Medio Ambiente, Seguridad-Salud, Seguridad alimentaria y Recursos…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Indirect evidence “En el corazón de la Ribeira Sacra (entre las provincias de Ourense y Lugo) encontramos el río Mao encajado entre cañones que invitan a perderse por el interior de Galicia en un…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 9 contacts → | ||||
Indirect evidence “ÁUREA INNOVACIÓN es una compañía nacional, competente en Consultoría y Auditoría especializada en Gestión de Calidad, Medioambiente, Seguridad Alimentaria, Gestión de Riesgos…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 contacts → | ||||
Indirect evidence “We are a company that provides #Consultancy services in #Quality Management, Environment, Health and Safety at Work, Information Security, Organic Law on Data Protection and…” Source: RevenueBase Database · checked Sep 20, 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: iso audit 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 iso audit companies.
- Partial evidence
- Its own public description names part of iso audit companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name iso audit 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 220 iso audit companies based in Spain
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,213 reachable decision-makers.
Free signup · no credit card
Iso audit companies based in Spain at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 220 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 iso audit 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 Spain whose own description of what they do matches “iso audit 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 iso audit 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 iso audit companies, and records with no verified work email. Companies headquartered outside Spain 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, 1,213 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 20, 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.
Iso audit companies by metro
- Iso audit companies in Madrid60
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 iso audit companies, 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 iso audit companies are there based in Spain?
RevenueBase identified 220 iso audit companies headquartered in 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?
OCA Global, headquartered in Sant Cugat Del Valles, tops this list with the largest team on record.
Which city has the most iso audit companies?
Madrid leads with 60 headquartered companies, followed by Barcelona (11) and Valencia (9).
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 1,213 verified decision-maker contacts tracked across these 220 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 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 220 iso audit companies based in Spain. Start with a free account, no credit card.
Download this list →Related lists
Iso audit companies by geography
- Iso audit companies based in Bangalore, India
- Iso audit companies based in Mumbai, India
- Iso audit companies based in Argentina
- Iso audit companies based in Australia
- Iso audit companies based in Belgium
- Iso audit companies based in Brazil
- Iso audit companies based in Canada
- Iso audit companies based in Chile
- Iso audit companies based in Colombia
- Iso audit companies based in Denmark
- Iso audit companies based in France
- Iso audit companies based in Germany
Browse the directory
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.