Company lists · Data refreshed August 2026

Top 25 Advertising agencies based in Spain

Name: Advertising agencies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 30, 2026 3,111 companies tracked

RevenueBase identified 3,111 advertising agencies headquartered in Spain as of August 2026 and tracks 31,518 professional contacts across them, including 3,099 with verified work emails and 1,116 with mobile numbers. Madrid is the largest hub.

This list covers advertising agencies 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 August 30, 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.

How to read this list RevenueBase Smart Search rating on every row Refreshed Aug 30, 2026 86% judged on-target in blind review

3,111Companies

31,518Contacts tracked

3,099Verified emails

1,116Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest advertising agencies based in Spain

Ranked by team size

Top 25 of 3,111 advertising agencies based in Spain, ranked by team size, largest first. Data refreshed Aug 30, 2026. RevenueBase Smart Search rates how each company's information relates to advertising agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	LLYC	Indirect evidence	Madrid, Spain	1,001-5,000	1,529 contacts →
	Indirect evidence “Together, we enhance and protect the value of your business.” Source: RevenueBase Database · checked Aug 30, 2026
2	Atresmedia Publicidad	Indirect evidence	Barcelona, Spain	51-200	308 contacts →
	Indirect evidence “Comercializadora Multimedia.” Source: RevenueBase Database · checked Aug 30, 2026
3	Publicis Groupe España	Indirect evidence	Madrid, Spain	501-1,000	276 contacts →
	Indirect evidence “Publicis Groupe, segundo grupo de comunicación a nivel mundial, es una plataforma de soluciones que está presente en más de 100 países y cuenta con más de colaboradores.” Source: RevenueBase Database · checked Aug 30, 2026
4	Lola Mullenlowe	Indirect evidence	Madrid, Spain	51-200	257 contacts →
	Indirect evidence “LOLA MullenLowe is a creative agency based in Madrid, built from world-class international talent.” Source: RevenueBase Database · checked Aug 30, 2026
5	Momentum Task Force	Indirect evidence	Madrid, Spain	201-500	227 contacts →
	Indirect evidence “Somos especialistas en marketing comercial y promocional, con más de 18 años de experiencia en el sector.” Source: RevenueBase Database · checked Aug 30, 2026
6	Conway Partners	Indirect evidence	Madrid, Spain	51-200	158 contacts →
	Indirect evidence “Conway+Partners is a full-service, integrated branding and marketing agency, headquartered in NYC, that specializes in the real estate and hospitality industries.” Source: RevenueBase Database · checked Aug 30, 2026
7	OMD España	Indirect evidence	Madrid, Spain	201-500	151 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 Aug 30, 2026
8	AFTER	Indirect evidence	Spain	51-200	133 contacts →
	Indirect evidence “Somos After, una agencia de publicidad -por ponernos una etiqueta- que mezcla estrategia, creatividad y cultura digital.” Source: RevenueBase Database · checked Aug 30, 2026
9	BE A Lion	Indirect evidence	Barcelona, Spain	51-200	113 contacts →
	Indirect evidence “Ayudamos a las marcas a crear y ejecutar sus estrategias de marketing a través del contenido y de la publicidad para generar resultados de negocio.” Source: RevenueBase Database · checked Aug 30, 2026
10	MIO Group	Indirect evidence	Madrid, Spain	201-500	112 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 Aug 30, 2026
11	Mccann Worldgroup Spain	Indirect evidence	Madrid, Spain	501-1,000	111 contacts →
	Indirect evidence “McCann Worldgroup, parte de Interpublic Group (NYSE: IPG), es una red global líder de soluciones de marketing con más de 20 empleados unidos en más de 100 países por una sola…” Source: RevenueBase Database · checked Aug 30, 2026
12	MIO ONE	Indirect evidence	Madrid, Spain	51-200	105 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 Aug 30, 2026
13	Agencia Tango	Indirect evidence	Madrid, Spain	51-200	99 contacts →
	Indirect evidence “Hola, somos Tangoº.” Source: RevenueBase Database · checked Aug 30, 2026
14	Zenith España	Indirect evidence	Madrid, Spain	51-200	92 contacts →
	Indirect evidence “Zenith es The ROI Agency.” Source: RevenueBase Database · checked Aug 30, 2026
15	Everyone Plus	Indirect evidence	San Sebastian De Los Reyes, Spain	51-200	84 contacts →
	Indirect evidence “Everyone Plus es una agencia de publicidad productiva con una imprenta creativa.” Source: RevenueBase Database · checked Aug 30, 2026
16	JFT Comunicación	Indirect evidence	Las Palmas De Gran Canaria Las Palmas De Gran Canaria, Spain	51-200	75 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 Aug 30, 2026
17	Serena	Indirect evidence	Madrid, Spain	51-200	74 contacts →
	Indirect evidence “Serena es un estudio de postproducción especializado en publicidad.” Source: RevenueBase Database · checked Aug 30, 2026
18	Grupo Marva	Indirect evidence	Madrid, Spain	201-500	74 contacts →
	Indirect evidence “Nos gusta escuchar para ayudar y compartir nuestra experiencia para AVANZAR, Iniciamos nuestra andadura en 1954, bajo la denominación de Talleres MARVA, con una actitud valiente…” Source: RevenueBase Database · checked Aug 30, 2026
19	Omnicom Media Group Spain	Indirect evidence	Madrid, Spain	201-500	71 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 Aug 30, 2026
20	Godó Strategies	Indirect evidence	Barcelona, Spain	51-200	70 contacts →
	Indirect evidence “Godó Strategies ofrece soluciones 360° en una amplia cartera de clientes.” Source: RevenueBase Database · checked Aug 30, 2026
21	Publicis España	Indirect evidence	Madrid, Spain	201-500	69 contacts →
	Indirect evidence “We believe that change has become the defining characteristic in today’s business environment.” Source: RevenueBase Database · checked Aug 30, 2026
22	RK People	Indirect evidence	Madrid, Spain	51-200	69 contacts →
	Indirect evidence “Somos una agencia de publicidad universal, europea, española, madrileña, pequeña e independiente con clientes como Burger King, Ecovidrio, Cortefiel, Prosegur, Loewe, Subaru o la…” Source: RevenueBase Database · checked Aug 30, 2026
23	Grupo GO	Indirect evidence	Madrid, Spain	51-200	60 contacts →
	Indirect evidence “Grupo GO es un grupo de marketing de influencia fundado por Paloma Miranda en 2015.” Source: RevenueBase Database · checked Aug 30, 2026
24	Doubleyou	Indirect evidence	Barcelona, Spain	51-200	57 contacts →
	Indirect evidence “DoubleYou is a communication company aimed at the creation and development of projects and campaigns in the current framework, shaped by media digitalization.” Source: RevenueBase Database · checked Aug 30, 2026
25	UM Spain	Indirect evidence	Valencia, Spain	201-500	57 contacts →
	Indirect evidence “UM Spain is a global media agency committed to transforming its clients' businesses for the present and the future.” Source: RevenueBase Database · checked Aug 30, 2026

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: advertising agencies. 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 advertising agencies.
Partial evidence: Its own public description names part of advertising agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advertising agencies. 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 3,111 advertising agencies based in Spain

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 3,099 reachable decision-makers.

Free signup · no credit card

View the full list →

Advertising agencies based in Spain at a glance

As of Aug 30, 2026

9.8%Verified-email coverage

3.5%Mobile-number coverage

10.1Average contacts per company

1-10Median size (employees)

27.2%Largest-city concentration · Madrid

Aug 30, 2026Page data refreshed

Companies by employee count

1-10

2,330

11-50

663

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 advertising agencies, 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 “advertising agencies”. 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 advertising agencies), 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 advertising agencies, 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, 3,099 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 August 30, 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.

Advertising agencies 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 advertising agencies, 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 advertising agencies are there based in Spain?

RevenueBase identified 3,111 advertising agencies headquartered in Spain as of August 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?

LLYC, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most advertising agencies?

Madrid leads with 846 headquartered companies, followed by Barcelona (493) and Valencia (111).

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 3,099 verified decision-maker contacts tracked across these 3,111 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,111 advertising agencies based in Spain. Start with a free account, no credit card.

Download this list →

Related lists

Advertising agencies by geography

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.