Company lists · Data refreshed September 2026

Top 18 Multilingual SEO agencies based in Spain

RevenueBase identified 100 company matches for multilingual SEO agencies associated with Spain as of September 2026 and tracks 648 professional contacts across them, including 138 with verified work emails. Madrid is the largest hub.

This list covers company matches for multilingual SEO agencies associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
100Companies
648Contacts tracked
138Verified emails
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The 18 largest multilingual SEO agencies based in Spain

Ranked by team size
Top 18 of 100 company matches for multilingual SEO agencies based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBarcelona, SpainHQ recorded Sep 29, 202651-20089 contacts →

Exact match

“ATLS is the strategic partner that drives business expansion into international markets, combining advanced technology, content localization, and multilingual digital marketing.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchVillamayor De Armuña, SpainHQ recorded Sep 29, 202651-20083 contacts →

Exact match

“SÚMATE es una agencia de marketing online orientada a resultados medibles.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchAlhama De Murcia, SpainHQ recorded Sep 29, 202651-20071 contacts →

Exact match

“Since 2012, at Interamplify, we have become strategic partners for brands and companies seeking to expand digitally on a global scale.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchMadrid, SpainHQ recorded Sep 29, 202611-5044 contacts →

Exact match

“VeraContent is a leading multilingual content agency in Europe that helps brands and publishers send the right message to audiences around the world.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchSant Joan D'alacant, SpainHQ recorded Sep 29, 202611-5031 contacts →

Exact match

“Since 2001, we've been boosting the online discoverability of leading international companies and media outlets.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Sep 29, 202611-5023 contacts →

Exact match

“Convertix is an International SEO & Performance Marketing Agency with offices in Madrid and Milan serving clients in 20+ markets and 10+ languages.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchVilablareix, SpainHQ recorded Sep 29, 20261-1010 contacts →

Exact match

“De la mà d’Eva Olivares i Xevi Sañé neix la primera agència 100% SEO a Girona.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchQuart De Poblet, SpainHQ recorded Sep 29, 202611-509 contacts →

Exact match

“Lacomunicación es una agencia de Marketing Digital en Valencia pionera en la consultoría SEO y el marketing digital, servicios que llevamos prestando desde 2004.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchBarcelona, SpainHQ recorded Sep 29, 202611-509 contacts →

Exact match

“One agency for all your multilingual communication needs.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchMadrid, SpainHQ recorded Sep 29, 20261-106 contacts →

Exact match

“We are an Exclusive SEO Agency with presence in Argentina and Spain, working for the main markets of Latin America and Europe.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchBarcelona, SpainHQ recorded Sep 29, 20261-106 contacts →

Exact match

“Trabajar únicamente centrado en el SEO en los últimos 20 años, en todo tipo de proyectos y sectores, me ha permitido adquirir EXPERIENCIA (si, en mayúsculas) y un pensamiento…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchSeville, SpainHQ recorded Sep 29, 20261-104 contacts →

Exact match

“Tradupla - Tu Puente Lingüístico hacia el Mundo ¡Bienvenido a Tradupla!”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchBarcelona, SpainHQ recorded Sep 29, 20261-104 contacts →

Exact match

“At all words digital, we provide translation services, content writing and multilingual digital marketing services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchBarcelona, SpainHQ recorded Sep 29, 20261-103 contacts →

Exact match

“MEDIATEO is the fastest growing translation and multi-lingual content production agency directed at internet, mobile and software companies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchMálaga, SpainHQ recorded Sep 29, 20261-102 contacts →

Exact match

“Moonlight Marketing es una agencia de SEO especializada al 100%, con el objetivo de multiplicar las ventas con posicionamiento.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchSeville, SpainHQ recorded Sep 29, 20261-102 contacts →

Exact match

“Linguistic, Translation, SEO and Creative Content Services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchBarcelona, SpainHQ recorded Sep 29, 20261-102 contacts →

Exact match

“MISTER MEISTER es tu agencia SEO en Barcelona y Manresa.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchValencia, SpainHQ recorded Sep 29, 20261-101 contacts →

Exact match

“Marketing agency specialized in Content, SEO, Social Media, Translations, Web Design and LinkBuilding.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 18 of 100 multilingual SEO agencies based in Spain

See the full list, filter by size, metro and specialty, and access 138 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Multilingual SEO agencies based in Spain at a glance

As of Sep 29, 2026
21.3%Verified-email coverage
6.5Average contacts per company
1-10Median size (employees)
21.0%Largest-city concentration · Madrid
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
77
11-50
19
51-200
4

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 100 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Spain whose business descriptions match “multilingual SEO agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 138 professional contacts with verified work emails across the full matched dataset. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “multilingual SEO agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many multilingual SEO agencies are there based in Spain?

RevenueBase identified 100 company matches for multilingual SEO agencies associated with Spain as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

ATLS tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most multilingual SEO agencies?

Madrid leads with 21 company records, followed by Barcelona (17) and Seville (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 138 professional contacts with verified work emails tracked across these 100 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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 SmartSearch, 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.