Company lists · Data refreshed September 2026
Top 25 Media agencies and representatives based in Spain
RevenueBase identified 299 media agencies and representatives headquartered in Spain as of September 2026 and tracks 4,695 professional contacts across them, including 575 with verified work emails and 75 with mobile numbers. Madrid is the largest hub.
This list covers media agencies and representatives 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 5, 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 media agencies and representatives based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 149 contacts → | ||||
Indirect evidence “OMD es una de las agencias líderes en España y se ha destacado por ser la más eficaz e innovadora de la industria española, contando con todos los recursos para dar un servicio…” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 137 contacts → | ||||
Indirect evidence “Manifiesto is an advertising agency based in Barcelona and Madrid and with 10 years of experience in the sector.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 117 contacts → | ||||
Partial evidence “En 014 Media somos el grupo especializado en la comercialización de soportes publicitarios en entornos altamente segmentados y audiencias cualitativas.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 114 contacts → | ||||
Indirect evidence “MIO Group es un ecosistema integrado de talento especialista en estrategia de marketing, creación de activos digitales y activación de medios.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 106 contacts → | ||||
Indirect evidence “HMG es una agencia que pertenece a MIO Group, grupo empresarial de servicios integrales de Marketing y Publicidad presidido por Yago Arbeloa, y con capital cien por cien español.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 102 contacts → | ||||
Indirect evidence “Somos una agencia de servicios plenos en la que trabajamos profesionales venidos de diferentes experiencias (creación, cuentas, planificación, interactivo.) Aplicamos la cercanía…” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 94 contacts → | ||||
Indirect evidence “Zenith es The ROI Agency.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 86 contacts → | ||||
Indirect evidence “Irismedia, es una agencia de medios, de servicios plenos, que van desde la Estrategia, planificación y compra de Medios, tanto de offline, como Online.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 77 contacts → | ||||
Indirect evidence “Somos un equipo que crece y evoluciona con sus clientes, que se adapta a las nuevas tendencias para ofrecer, en todo momento a sus marcas, grandes dosis de creatividad y el mix de…” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 69 contacts → | ||||
Indirect evidence “En OmnicomMediaGroup creamos soluciones sólidas que impactan en el resultado de negocio de nuestros clientes, basadas en un end-to-end process manteniendo siempre al consumidor en…” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 60 contacts → | ||||
Indirect evidence “IAB Spain (Interactive Adverstising Bureau) es la asociación española que representa al sector de la publicidad y la comunicación digital en España.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 57 contacts → | ||||
Partial evidence “UM Spain is a global media agency committed to transforming its clients' businesses for the present and the future.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 54 contacts → | ||||
Indirect evidence “Move People Move Business” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 52 contacts → | ||||
Indirect evidence “Agencia de publicidad de servicios plenos.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 52 contacts → | ||||
Partial evidence “Agencia de comunicación y medios perteneciente a Havas Media Network con presencia en 11 ciudades en España.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 51 contacts → | ||||
Indirect evidence “Dentsu X, la agencia de mejor performance del mercado, conecta a través de los medios, los contenidos, los datos y la tecnología.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 49 contacts → | ||||
Indirect evidence “Ayudamos a las marcas a crecer a través de la comprensión del marketing moderno y de la nueva economía de la comunicación.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 49 contacts → | ||||
Indirect evidence “Somos Mindshare.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 46 contacts → | ||||
Partial evidence “Zenithbr is the leading media agency in its area of influence, owned by the multinational Zenith, The ROI Agency, part of the Publicis Group.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 40 contacts → | ||||
Partial evidence “UPartner Media defies the traditional media agency model with al full fledged service commitment, result driven and customer integrated on/off offer.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 38 contacts → | ||||
Partial evidence “Delivery Media es una central de ventas independiente cuya misión es satisfacer las necesidades de representación comercial publicitaria, nacional e internacional, de medios de…” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 37 contacts → | ||||
Indirect evidence “Agencia de publicidad y medios.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 36 contacts → | ||||
Indirect evidence “Leo Burnett Madrid forma parte de una de las redes de agencias creativas más grandes del mundo, con oficinas en más de 96 países.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 32 contacts → | ||||
Partial evidence “INNOVATION FOR BRAND SPECIFIC MEDIA.” Source: RevenueBase Database · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 26 contacts → | ||||
Partial evidence “Anima is an independent global media specialist which works with the world’s most important media agencies planning and buying international advertising around the world.” Source: RevenueBase Database · checked Sep 5, 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: media agencies and representatives. 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 media agencies and representatives.
- Partial evidence
- Its own public description names part of media agencies and representatives, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name media agencies and representatives. 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 299 media agencies and representatives based in Spain
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Media agencies and representatives based in Spain at a glance
As of Sep 5, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 media agencies and representatives, 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 “media agencies and representatives”. 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 media agencies and representatives), 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 media agencies and representatives, 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, 575 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 5, 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.
Media agencies and representatives by metro
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 media agencies and representatives, 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 media agencies and representatives are there based in Spain?
RevenueBase identified 299 media agencies and representatives 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?
OMD España, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most media agencies and representatives?
Madrid leads with 139 headquartered companies, followed by Barcelona (51) and Sevilla (8).
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 575 verified decision-maker contacts tracked across these 299 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 5, 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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