Company lists · Data refreshed September 2026

Top 25 Account advertising companies based in Madrid, Spain

Name: Account advertising companies based in Madrid, Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 938 companies tracked

RevenueBase identified 938 account advertising companies headquartered in Madrid, Spain as of September 2026 and tracks 14,806 professional contacts across them, including 1,778 with verified work emails and 247 with mobile numbers. Madrid is the largest hub.

This list covers account advertising companies headquartered in Madrid, 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 22, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

938Companies

14,806Contacts tracked

1,778Verified emails

247Mobile numbers

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The 25 largest account advertising companies based in Madrid, Spain

Ranked by team size

Top 25 of 938 account advertising companies based in Madrid, Spain, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to account advertising companies: 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, SpainHQ checked Sep 22, 2026	1,001-5,000	1,520 contacts →
	Indirect evidence “Together, we enhance and protect the value of your business.” Source: RevenueBase Database · checked Sep 22, 2026
2	CHINA	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	n/a	1,304 contacts →
	Indirect evidence “CHINA es un agencia de publicidad que comenzó su andadura a comienzos de 2010 y que plantea cambiar las reglas del juego en la relación de agencia anunciante con su sencillo lema…” Source: RevenueBase Database · checked Sep 22, 2026
3	Publicis Groupe España	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	501-1,000	274 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 Sep 22, 2026
4	Lola Mullenlowe	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	259 contacts →
	Indirect evidence “LOLA MullenLowe is a creative agency based in Madrid, built from world-class international talent.” Source: RevenueBase Database · checked Sep 22, 2026
5	Momentum Task Force	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	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 Sep 22, 2026
6	Good Rebels	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	208 contacts →
	Indirect evidence “Data, design, creativity and technology.” Source: RevenueBase Database · checked Sep 22, 2026
7	PHD Media Spain	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	201-500	191 contacts →
	Indirect evidence “PHD es una de las agencias de medios perteneciente al grupo Omnicom.” Source: RevenueBase Database · checked Sep 22, 2026
8	Iprospect Spain	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	154 contacts →
	Indirect evidence “iProspect suma ahora más innovación, data, tecnología y talento para construir su propuesta de valor diferencial junto con las características que definieron durante toda su…” Source: RevenueBase Database · checked Sep 22, 2026
9	OMD España	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	201-500	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 22, 2026
10	Manifiesto	Partial evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	137 contacts →
	Partial 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 22, 2026
11	Able&baker	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	11-50	133 contacts →
	Indirect evidence “Designing your Entertainment: ABLE & BAKER is a creative studio for media content development and production.” Source: RevenueBase Database · checked Sep 22, 2026
12	014 Media	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	201-500	117 contacts →
	Indirect 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 22, 2026
13	MIO Group	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	201-500	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 22, 2026
14	BE A Lion	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	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 Sep 22, 2026
15	Mccann Worldgroup Spain	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	501-1,000	112 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 Sep 22, 2026
16	HMG	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	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 22, 2026
17	BURNS	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	105 contacts →
	Indirect evidence “Merging human with digital.” Source: RevenueBase Database · checked Sep 22, 2026
18	Agencia Kitchen	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	11-50	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 22, 2026
19	Havas Digital	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	1,001-5,000	102 contacts →
	Indirect evidence “Havas Digital is the umbrella holding company that manages all Havas Media's interactive companies: Media Contacts and Lattitud, global interactive media networks; iGlue, new…” Source: RevenueBase Database · checked Sep 22, 2026
20	Agencia Tango	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	97 contacts →
	Indirect evidence “Hola, somos Tangoº.” Source: RevenueBase Database · checked Sep 22, 2026
21	Zenith España	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	94 contacts →
	Indirect evidence “Zenith es The ROI Agency.” Source: RevenueBase Database · checked Sep 22, 2026
22	Irismedia	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	11-50	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 22, 2026
23	Grupo Marva	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	201-500	75 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 Sep 22, 2026
24	Media Power	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	11-50	73 contacts →
	Indirect evidence “Somos una agencia que resuelve las necesidades de las marcas a través de estrategias de Marketing Digital basadas en el conocimiento profundo de los negocios.” Source: RevenueBase Database · checked Sep 22, 2026
25	SO Media Group	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	71 contacts →
	Indirect evidence “A better way to speak to the world!” Source: RevenueBase Database · checked Sep 22, 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: account advertising 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 account advertising companies.
Partial evidence: Its own public description names part of account advertising companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name account advertising 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 938 account advertising companies based in Madrid, Spain

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Account advertising companies based in Madrid, Spain at a glance

As of Sep 22, 2026

12.0%Verified-email coverage

1.7%Mobile-number coverage

15.8Average contacts per company

1-10Median size (employees)

19.1%Largest-city concentration · Madrid

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

558

11-50

299

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 24.0d

1,3640–30

38531–60

1861–90

290–180

9180+

Company record updated

Median 77.0d

00–30

4,10131–60

6,14061–90

3,94190–180

624180+

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 account advertising 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 Madrid, Spain whose own description of what they do matches “account advertising 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 account advertising 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 account advertising companies, and records with no verified work email. Companies headquartered outside Madrid 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, 1,778 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 22, 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.

Account advertising companies by metro in Spain

Account advertising companies in Madrid179
Account advertising companies in Barcelona97

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 account advertising 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 account advertising companies are there based in Madrid, Spain?

RevenueBase identified 938 account advertising companies headquartered in Madrid, 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?

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

Which city has the most account advertising companies?

Madrid leads with 179 headquartered companies, followed by Barcelona (97) and Valencia (21).

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 1,778 verified decision-maker contacts tracked across these 938 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 22, 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.