Company lists · Data refreshed September 2026
Top 25 SaaS SEO agencies based in Spain
RevenueBase identified 603 SaaS SEO agencies headquartered in Spain as of September 2026 and tracks 2,561 professional contacts across them, including 386 with verified work emails and 73 with mobile numbers. Madrid is the largest hub.
This list covers SaaS SEO agencies headquartered in 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 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.
The 25 largest SaaS SEO agencies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 108 | ||||
“En nuestra agencia SEO en Barcelona somos unos apasionados del posicionamiento web.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 38 | ||||
“Esta empresa se creó para dar respuesta a una necesidad cada vez más demandada: el posicionamiento web.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 38 | ||||
“Keyweo is a digital marketing agency founded in 2018 and based in Barcelona.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 31 | ||||
“Since 2001, we've been boosting the online discoverability of leading international companies and media outlets.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 31 | ||||
“de páginas web accesibles.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 23 | ||||
“Convertix is an International SEO & Performance Marketing Agency with offices in Madrid and Milan serving clients in 20+ markets and 10+ languages.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 21 | ||||
“Liten Lemon es una agencia de marketing digital ubicada en Madrid, España.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Sembi ComunicaciónPartial evidence | 20 | |||
“Sembi Communication is a Digital Marketing Agency experts in SEO (Search Engine Optimization),(Search Engine Marketing), Media Digital Content, Web Design, Community Manager &…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Yoseo MarketingIndirect evidence | 19 | |||
“En YoSEOMarketing, somos la agencia líder en transformación digital, especializada en posicionamiento y resultados sostenibles.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 17 | ||||
“Agencia de Marketing Digital | Hacemos SEO, SEM, Diseño Web, Redes Sociales, Vídeo Marketing, Email Marketing y Mantenimiento de Sistemas.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 | ||||
“Somos Bring, tu agencia de Growth.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 16 | ||||
“Positio, agencia de marketing de contenidos especializada en posicionamiento SEO y SEM-PPC, analítica web, Social Media y blogging.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 15 | ||||
“Seocoaching es una empresa especializada en posicionamiento web con resultados comprobados y servicios SEO garantizados.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 15 | ||||
“Agencia de Marketing Online, Posicionamiento SEO, Local SEO, SEM, Gestión de Redes Sociales, Diseño Gráfico, Diseño Web y e-Commerce.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | NovaigrupIndirect evidence | 14 | |||
“Novaigrup, agencia de ingeniería web y marketing en Internet.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | The Last DockPartial evidence | 14 | |||
“Somos una agencia de Marketing Digital Somos especialistas en Posicionamiento Web (SEO) Somos especialistas en Diseño Web Somos especialistas en Publicidad en Google Adwords Somos…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | OveraliaIndirect evidence | 14 | |||
“Overalia is a digital marketing agency, with experience in web development since 1996 and a pioneer in the fields of search engine marketing, web analytics and online reputation.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 | ||||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Localmetric Agencia DE SEO LocalPartial evidence | 13 | |||
“Localmetric es una agencia de marketing digital experta en SEO Local.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 | ||||
“We are a 360° digital marketing agency.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 12 | ||||
“GO2JUMP, tu agencia de marketing online 360º con 16 años de experiencia.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 12 | ||||
“En Grouber Marketing, te ayudamos con una estrategia específica para tu negocio.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 12 | ||||
“SeDigital es una Agencia de Marketing Digital localizada en Madrid que presta sus servicios de SEO y SEM - PPC a otras empresas del ámbito nacional.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Agencia SeoclicIndirect evidence | 11 | |||
“AGENCIA SEOCLIC Somos una Agencia especializada en posicionamiento online, y que cubrimos diferentes servicios relacionados con el Marketing Digital.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 | ||||
“De la mà d’Eva Olivares i Xevi Sañé neix la primera agència 100% SEO a Girona.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 603 SaaS SEO agencies based in Spain
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SaaS SEO agencies based in Spain at a glance
As of Sep 6, 2026Companies by employee count
Verified emails by last verification
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 SaaS SEO agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Spain whose own description of what they do matches “SaaS SEO agencies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among SaaS SEO agencies, and records with no verified work email. Companies headquartered outside Spain 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 an evidence 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, 386 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 6, 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.
SaaS SEO agencies by metro
Frequently asked
How many SaaS SEO agencies are there based in Spain?
RevenueBase identified 603 SaaS SEO agencies headquartered in 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?
Bigseo, headquartered in Barcelona, tops this list with the largest team on record.
Which city has the most SaaS SEO agencies?
Madrid leads with 107 headquartered companies, followed by Barcelona (83) and Valencia (31).
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 386 verified decision-maker contacts tracked across these 603 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 6, 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.