Company lists · Data verified August 2026

Top 25 Advertising agencies based in Madrid, Spain

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 846 companies tracked

There are 846 advertising agencies headquartered in Madrid, Spain (RevenueBase, August 2026). RevenueBase tracks 16,753 professional contacts across them, including 1,450 with verified work emails and 805 with mobile numbers. Madrid is the largest hub.

This list covers advertising agencies headquartered in Madrid, Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

846Companies

16,753Contacts tracked

1,450Verified emails

805Mobile numbers

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The 25 largest advertising agencies based in Madrid, Spain

Ranked by team size

Top 25 of 846 advertising agencies based in Madrid, Spain, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	IPG Mediabrands	Madrid	10001+	4,925	11
2	LLYC	Madrid	1,001-5,000	1,529	254
3	CHINA	Madrid	n/a	1,301	2
4	Publicis Groupe España	Madrid	501-1,000	276	36
5	Lola Mullenlowe	Madrid	51-200	257	27
6	Momentum Task Force	Madrid	201-500	227	15
7	Conway Partners	Madrid	51-200	158	49
8	OMD España	Madrid	201-500	151	32
9	MIO Group	Madrid	201-500	112	13
10	Mccann Worldgroup Spain	Madrid	501-1,000	111	16
11	MIO ONE	Madrid	51-200	105	11
12	Agencia Tango	Madrid	51-200	99	16
13	Zenith España	Madrid	51-200	92	8
14	Connaxis	Madrid	51-200	79	25
15	Serena	Madrid	51-200	74	17
16	Grupo Marva	Madrid	201-500	74	11
17	Omnicom Media Group Spain	Madrid	201-500	71	14
18	Publicis España	Madrid	201-500	69	19
19	RK People	Madrid	51-200	69	10
20	Annie Bonnie	Madrid	51-200	63	9
21	Grupo GO	Madrid	51-200	60	20
22	Alabra	Madrid	51-200	51	5
23	Kahlo Agencia	Madrid	11-50	50	15
24	Mindshare Spain	Madrid	51-200	49	7
25	WAY To Blue	Madrid	51-200	49	5

Showing 25 of 846 advertising agencies based in Madrid, Spain

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Advertising agencies based in Madrid, Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 846 HQs

805Contacts with mobile numbers

9Emails re-verified in last 30 days

Companies by employee count

1-10

531

11-50

255

51-200

201-500

501-1,000

1,001-5,000

10001+

Advertising agencies by metro in Spain

Metro	Companies
Advertising agencies in Madrid	846
Advertising agencies in Barcelona	493
Advertising agencies in Valencia	111
Advertising agencies in Malaga	81
Advertising agencies in Sevilla	58
Advertising agencies in Bilbao	38
Advertising agencies in Zaragoza	37

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “advertising agencies”, with match quality audited by blind human judging, and headquartered in Madrid, Spain.
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: Contact records re-verify on a rolling cadence; 9 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many advertising agencies are there based in Madrid, Spain?

There are 846 advertising agencies headquartered in Madrid, Spain as of August 2026 (RevenueBase).

What is the largest company on this list?

IPG Mediabrands, 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 1,450 verified decision-maker contacts tracked across these 846 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.