SEO & AI SEO agencies · 2026

The best SEO & AI SEO agencies in Spain (2026)

Barcelona and Madrid lead Spain’s agency market in this edition, with Alicante, Córdoba and Montpellier also represented. iSocialWeb ranks first locally. Spanish-language search, eCommerce and international programs feature strongly, and several agencies are equipped to work across both Spain and wider European or Latin American audiences.

Top-ranked agency

iSocialWeb ranks #1 in Spain

The 2026 assessment places iSocialWeb first for its combination of search depth, AI-search capability, public evidence and client fit.

View the iSocialWeb profile

Quick comparison

Top 10 Spain agencies at a glance

Open matrixClose matrix

RankAgencyCityPrimary specialisationBest client fitPrice band

#1iSocialWebGlobal #178BarcelonaAI searchEnterprise$$$

#2Human LevelGlobal #182AlicanteEnterprise SEOEnterprise$$$

#3DobussGlobal #179CórdobaSEOMid-market$$

#4BIGSEOGlobal #180BarcelonaEnterprise SEOEnterprise$$$

#5Internet RepúblicaGlobal #184MadridEnterprise SEOEnterprise$$$

#6SEOCOMGlobal #186BarcelonaTechnical SEOMid-market$$

#7RodanetGlobal #187BarcelonaeCommerceMid-market$$

#8WebpositerGlobal #181AlicanteSEOMid-market$$

#9Flat 101Global #183MadrideCommerceEnterprise$$$

#10NeoAttackGlobal #185MadridSEOGrowth$$

RankAgencyPriceClient fit

#1iSocialWebBarcelona · AI search$$$Enterprise

#2Human LevelAlicante · Enterprise SEO$$$Enterprise

#3DobussCórdoba · SEO$$Mid-market

#4BIGSEOBarcelona · Enterprise SEO$$$Enterprise

#5Internet RepúblicaMadrid · Enterprise SEO$$$Enterprise

#6SEOCOMBarcelona · Technical SEO$$Mid-market

#7RodanetBarcelona · eCommerce$$Mid-market

#8WebpositerAlicante · SEO$$Mid-market

#9Flat 101Madrid · eCommerce$$$Enterprise

#10NeoAttackMadrid · SEO$$Growth

Agency ranking

10 leading agencies in Spain

Assessed August 2026

01
iSocialWeb
Barcelona, Spain · Global #178
The clearest reason to shortlist iSocialWeb is its AI search focus. From Barcelona, the agency also works across Technical SEO and eCommerce for enterprise clients.
AI searchTechnical SEOeCommerce
iSocialWeb suits enterprise teams buying AI search depth over breadth.Price band: $$$iSocialWeb may be less suitable for small budgets, with minimum engagements sized for enterprise work.
View agency profile
02
Human Level
Alicante, Spain · Global #182
For a enterprise brief, Human Level is most relevant when Enterprise SEO is the priority. Its Alicante team also presents capability in AI search and International SEO.
Enterprise SEOAI searchInternational SEO
Human Level is best matched to enterprise organisations where AI search carries the strategy.Price band: $$$Human Level is less suited to small budgets, with minimum engagements sized for enterprise work.
View agency profile
03
Dobuss
Córdoba, Spain · Global #179
Dobuss represents Córdoba in the 2026 ranking. Its strongest assessed discipline is SEO, backed by capability in Local SEO and Enterprise SEO.
SEOLocal SEOEnterprise SEO
Dobuss is best suited to mid-market organisations putting enterprise SEO at the centre of the search budget.Price band: $$Dobuss is less suited to complex multi-region programs better matched to larger shops.
View agency profile
04
BIGSEO
Barcelona, Spain · Global #180
Buyers comparing agencies in Spain may consider BIGSEO for Enterprise SEO. The agency’s wider offer includes eCommerce and Digital PR.
Enterprise SEOeCommerceDigital PR
BIGSEO is best suited to enterprise teams that treat enterprise SEO as the core of the program, not an add-on.Price band: $$$BIGSEO is less suited to small budgets, with minimum engagements sized for enterprise work.
View agency profile
05
Internet República
Madrid, Spain · Global #184
Internet República joins the Spain shortlist as a Enterprise SEO specialist. Its profile is extended by Content and Growth, with Madrid as its listed base.
Enterprise SEOContentGrowth
Internet República is best suited to enterprise organisations putting enterprise SEO at the centre of the search budget.Price band: $$$Internet República may be less suitable for startups still too early for a full enterprise program.
View agency profile
06
SEOCOM
Barcelona, Spain · Global #186
The clearest reason to shortlist SEOCOM is its Technical SEO focus. From Barcelona, the agency also works across eCommerce and Content for mid-market clients.
Technical SEOeCommerceContent
SEOCOM is best suited to a credible bench where the brief is technical SEO and the buyer is mid-market.Price band: $$SEOCOM is less suited to sites whose blockers are technical rather than editorial.
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07
Rodanet
Barcelona, Spain · Global #187
Rodanet represents Barcelona in the 2026 ranking. Its strongest assessed discipline is eCommerce, backed by capability in Technical SEO and International SEO.
eCommerceTechnical SEOInternational SEO
Rodanet is a natural shortlist entry for mid-market brands whose priority is technical SEO.Price band: $$Rodanet is less suited to complex multi-region programs better matched to larger shops.
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08
Webpositer
Alicante, Spain · Global #181
Webpositer is positioned around SEO, with Content and Thought leadership broadening the offer. It is listed for mid-market engagements from Alicante.
SEOContentThought leadership
Webpositer suits mid-market teams buying content strategy depth over breadth.Price band: $$Webpositer is less suited to sites whose blockers are technical rather than editorial.
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09
Flat 101
Madrid, Spain · Global #183
The 2026 assessment places eCommerce at the centre of Flat 101’s profile. Analytics and SEO round out the agency’s search offer in Spain.
eCommerceAnalyticsSEO
Flat 101 suits enterprise teams buying eCommerce depth over breadth.Price band: $$$Flat 101 is less suited to startups still too early for a full enterprise program.
View agency profile
10
NeoAttack
Madrid, Spain · Global #185
NeoAttack is a Madrid-based SEO agency serving growth buyers. The 2026 review also considers its work across Growth and Local SEO.
SEOGrowthLocal SEO
NeoAttack is best matched to growth organisations where growth marketing carries the strategy.Price band: $$NeoAttack is less suited to brands chasing national visibility rather than map-pack results.
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How this ranking works

Local order reflects capability, not simply global position.

Each country page re-ranks its shortlist using AI-search capability, SEO depth and evidence signals. This makes the list useful for local selection while preserving every agency’s global rank for context.

Scores are based on publicly demonstrated capabilities assessed on 26 August 2026. They are editorial indicators, not guarantees of future performance.

Local buyer questions

Choosing an SEO or AI SEO agency in Spain

How much does an SEO agency cost in Spain?

The ten Spain agencies in this edition are distributed across relative engagement bands as follows: 0 $, 5 $$, 5 $$$. These bands help comparison but are not quotes. Confirm scope, currency, taxes and pricing directly with each agency.

Should I hire a local Spain SEO agency or a global one?

A local Spain agency can be useful when language, working hours and market relationships matter. A global specialist may be the better fit for a complex international site or a narrow technical problem. Compare evidence from work closest to your own brief.

Which Spain agencies lead on AI SEO?

iSocialWeb, Human Level show the strongest AI-search signals among the ten Spain agencies assessed in August 2026. Buyers should still request dated examples from the answer engines that matter to them.