Company lists · Data verified August 2026

Top 25 Ad tech consulting firms based in Spain

Name: Ad tech consulting firms based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 527 companies tracked

There are 527 ad tech consulting firms headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 4,319 professional contacts across them, including 717 with verified work emails and 93 with mobile numbers. Madrid is the largest hub.

This list covers ad tech consulting firms headquartered in 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.

527Companies

4,319Contacts tracked

717Verified emails

93Mobile numbers

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The 25 largest ad tech consulting firms based in Spain

Ranked by team size

Top 25 of 527 ad tech consulting firms based in 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	Kimia Group	Madrid	51-200	260	16
2	Vidoomy	Madrid	201-500	112	33
3	Exoclick	Barcelona	51-200	107	34
4	MIO ONE	Madrid	51-200	105	11
5	Arkeero	Madrid	51-200	95	33
6	Thing OR TWO	Barcelona	51-200	85	1
7	Bysidecar	A Coruna	51-200	84	10
8	Refinery89	Madrid	51-200	71	42
9	Godó Strategies	Barcelona	51-200	70	13
10	Viva Conversion	Valencia Valencia	11-50	59	9
11	Doubleyou	Barcelona	51-200	57	11
12	Tappx With Techsoulogy	Barcelona	51-200	56	27
13	Kinesso España	Barcelona	51-200	52	14
14	Showerthinking	Madrid	51-200	45	25
15	Geotelecom	Burgos	51-200	41	5
16	Millennials Consulting España	Madrid	11-50	40	20
17	Opti Digital	Barcelona	11-50	40	7
18	Esparta Digital	Valenciavalencia	11-50	38	5
19	Illumin EU & Latam	Madrid	201-500	33	8
20	Rommel & Montgomery	Mairena Del Aljarafe	11-50	30	17
21	Optima	Barcelona	51-200	28	14
22	CAVAI	Madrid	11-50	26	13
23	Ooptimo Digital Consulting	Barcelona	11-50	26	6
24	Appcelerate	Madrid	11-50	24	2
25	WHY ADS Media	n/a	11-50	21	4

Showing 25 of 527 ad tech consulting firms based in Spain

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Ad tech consulting firms based in Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 176 HQs

93Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

348

11-50

143

51-200

201-500

1,001-5,000

Ad tech consulting firms by metro

Metro	Companies
Ad tech consulting firms in Madrid	176
Ad tech consulting firms in Barcelona	95
Ad tech consulting firms in Valencia	21
Ad tech consulting firms in Sevilla	10
Ad tech consulting firms in Santa Cruz De Tenerife	8
Ad tech consulting firms in Marbella	7
Ad tech consulting firms in Malaga	7

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 “ad tech consulting firms”, with match quality audited by blind human judging, and headquartered in 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; 5 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 ad tech consulting firms are there based in Spain?

There are 527 ad tech consulting firms headquartered in Spain as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most ad tech consulting firms?

Madrid leads with 176 headquartered companies, followed by Barcelona (95) 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 717 verified decision-maker contacts tracked across these 527 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.