Company lists · Data refreshed November 2026

Top 25 International SEO agencies based in Spain

RevenueBase identified 376 company matches for international SEO agencies associated with Spain as of November 2026 and tracks 1,742 professional contacts across them, including 315 with verified work emails. Madrid is the largest hub.

This list covers company matches for international 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 November 5, 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 Nov 5, 2026 How this list was built
376Companies
1,742Contacts tracked
315Verified emails
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The 25 largest international SEO agencies based in Spain

Ranked by team size
Top 25 of 376 company matches for international SEO agencies based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 Nov 5, 202651-200102 contacts →

Exact match

“En nuestra agencia SEO en Barcelona somos unos apasionados del posicionamiento web.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchVillamayor De Armuña, SpainHQ recorded Nov 5, 202651-20083 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchAlhama De Murcia, SpainHQ recorded Nov 5, 202651-20067 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 · Nov 5, 2026 · View company records in RevenueBase
4Exact matchBarcelona, SpainHQ recorded Nov 5, 202611-5044 contacts →

Exact match

“Keyweo is a digital marketing agency founded in 2018 and based in Barcelona.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchMadrid, SpainHQ recorded Nov 5, 202651-20038 contacts →

Exact match

“We are a specialized multi-channel Digital Marketing and Media Agency.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchValencia, SpainHQ recorded Nov 5, 202611-5037 contacts →

Exact match

“Esta empresa se creó para dar respuesta a una necesidad cada vez más demandada: el posicionamiento web.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchSant Joan D'alacant, SpainHQ recorded Nov 5, 202611-5035 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 · Nov 5, 2026 · View company records in RevenueBase
8Exact matchSpainHQ recorded Nov 5, 202611-5026 contacts →

Exact match

“Vime Digital is an international digital marketing agency born in BCN.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchOviedo, SpainHQ recorded Nov 5, 202611-5019 contacts →

Exact match

“An independent, international online marking agency.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchGijón, SpainHQ recorded Nov 5, 202611-5017 contacts →

Exact match

“Agencia de Marketing Online, Posicionamiento SEO, Local SEO, SEM, Gestión de Redes Sociales, Diseño Gráfico, Diseño Web y e-Commerce.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchSabadell, SpainHQ recorded Nov 5, 202611-5016 contacts →

Exact match

“Services of Digital Strategy, Online Marketing and Development of websites and applications in web environment and mobile applications.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchBarcelona, SpainHQ recorded Nov 5, 202611-5016 contacts →

Exact match

“Seocoaching es una empresa especializada en posicionamiento web con resultados comprobados y servicios SEO garantizados.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchPuerto De La Cruz, SpainHQ recorded Nov 5, 202611-5015 contacts →

Exact match

“In Optimanova we understand Web Optimisation as a way to take the best advantage from your website.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchMuchamiel, SpainHQ recorded Nov 5, 20261-1014 contacts →

Exact match

“Qué hacemos en SEOInnova?”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Nov 5, 20261-1013 contacts →

Exact match

“Defining who we are is asking what we do.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchBarcelona, SpainHQ recorded Nov 5, 202611-5012 contacts →

Exact match

“Estudio34 is an online marketing agency based in Barcelona (Spain) that provides digital marketing services to businesses that either need to improve their online visibility or…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchBarcelona, SpainHQ recorded Nov 5, 202611-5012 contacts →

Exact match

“With roots and inspiration in Barcelona's iconic Pueblo Seco, Palo Seco is a digital marketing agency that empowers businesses like yours to achieve their online goals.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchMadrid, SpainHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“SEOLeverage is an International e-commerce SEO agency with over 20 years of SEO experience.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBarcelona, SpainHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“At 22tribes, we’re not just another digital marketing agency, but we’re your growth partner.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchMurcia, SpainHQ recorded Nov 5, 20261-1011 contacts →

Exact match

“AGENCIA SEOCLIC Somos una Agencia especializada en posicionamiento online, y que cubrimos diferentes servicios relacionados con el Marketing Digital.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchQuart De Poblet, SpainHQ recorded Nov 5, 202611-5010 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 · Nov 5, 2026 · View company records in RevenueBase
22Exact matchVilablareix, SpainHQ recorded Nov 5, 20261-109 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 · Nov 5, 2026 · View company records in RevenueBase
23Exact matchBarcelona, SpainHQ recorded Nov 5, 202611-509 contacts →

Exact match

“En Adrenalina tenemos la firme convicción, de que formar y cohesionar un equipo experto en Seo y Marketing Online, debe ser el principal objetivo de nuestra empresa.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchOviedo, SpainHQ recorded Nov 5, 20261-109 contacts →

Exact match

“Agencia de marketing digital 360º con expertos en diseño web y posicionamiento SEO y SEM ubicada en Oviedo, Asturias desde el 2015.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchBarcelona, SpainHQ recorded Nov 5, 20261-107 contacts →

Exact match

“ORBITALIA is a performance-driven SEO and digital marketing agency based in Barcelona.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 376 international SEO agencies based in Spain

See the full list, filter by size, metro and specialty, and access 315 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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International SEO agencies based in Spain at a glance

As of Nov 5, 2026
18.1%Verified-email coverage
4.6Average contacts per company
1-10Median size (employees)
15.2%Largest-city concentration · Madrid
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
315
11-50
52
51-200
6

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 376 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 “international 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 315 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 November 5, 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 “international SEO agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many international SEO agencies are there based in Spain?

RevenueBase identified 376 company matches for international SEO agencies associated with Spain as of November 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?

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

Which city has the most international SEO agencies?

Madrid leads with 57 company records, followed by Barcelona (56) and Valencia (23).

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 315 professional contacts with verified work emails tracked across these 376 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 November 5, 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.