Company lists · Data refreshed September 2026
Top 25 Multilingual SEO agencies worldwide
RevenueBase identified 2,539 multilingual SEO agencies worldwide as of September 2026 and tracks 12,979 professional contacts across them, including 1,905 with verified work emails. The United States is the largest market and London the largest hub.
This list covers multilingual SEO agencies worldwide, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026. Country and city lists for multilingual SEO agencies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 multilingual SEO agencies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 463 contacts → | ||||
Partial evidence “ClickOut Media is an remote first, industry leading, multichannel marketing company, delivering best in class SEO & content for esteemed clients all over the world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 326 contacts → | ||||
Partial evidence “At Boostability, we're more than just an SEO company; we're your strategic partner in driving online growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 168 contacts → | ||||
Partial evidence “ICS-digital is a global SEO, content, advertising, translation & digital PR agency working in over 100 languages, across over 90 markets in the most highly regulated and highly…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 141 contacts → | ||||
Partial evidence “Founded in 2016 in Spain, and currently operating in Brazil, liveSEO performs consistent and well-targeted work in SEO (search engine optimization), attracting companies looking…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 127 contacts → | ||||
Partial evidence “Semalt is a results-driven, technology-inspired SEO company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 127 contacts → | ||||
Indirect evidence “At Synergium, we believe global expansion requires more than language services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 109 contacts → | ||||
Partial evidence “Grizzly New Marketing is een gespecialiseerd SEO marketingbureau in Nederland (Breda en Rotterdam), België (Antwerpen-Berchem) en de Verenigde Staten (New York).” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 94 contacts → | ||||
Indirect evidence “Algoritz is the next generation Internet marketing firm growing in a rapid speed ever since it was started in the Year 2010.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 89 contacts → | ||||
Partial evidence “ATLS is the strategic partner that drives business expansion into international markets, combining advanced technology, content localization, and multilingual digital marketing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 88 contacts → | ||||
Indirect evidence “We are one of Northern Europe's biggest content agencies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 83 contacts → | ||||
Indirect evidence “SÚMATE es una agencia de marketing online orientada a resultados medibles.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 77 contacts → | ||||
Partial evidence “Wir sind eine mehrfach ausgezeichnete Agentur für internationales SEO, GEO und Content Marketing mit Sitz in Berlin.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 76 contacts → | ||||
Partial evidence “We’re an international Search Agency: SEO+ SEM +AI.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 75 contacts → | ||||
Indirect evidence “Pro Web consulting is an international agency based in Switzerland specialized in Search Engine Optimization and Digital Marketing Strategy.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 74 contacts → | ||||
Indirect evidence “The Egg is the digital growth agency for brands who know one performance playbook won’t work everywhere.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 72 contacts → | ||||
Indirect evidence “We are one of the fastest growing Internet Marketing Companies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 72 contacts → | ||||
Indirect evidence “SEOValley is one of the most trusted and fastest growing interactive marketing companies serving small to medium size companies worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 71 contacts → | ||||
Indirect evidence “Since 2012, at Interamplify, we have become strategic partners for brands and companies seeking to expand digitally on a global scale.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 68 contacts → | ||||
Partial evidence “Agencia exclusiva SEO en LatAm, USA y Europa enfocada en metodología, capacitación y estrategias adhoc para cada industria (eCommerce/Medios/Retails/TelCos/etc) y cada tipo de…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 67 contacts → | ||||
Partial evidence “Peak Ace est l’agence conseil de référence spécialisée en search prédictif SEO-GEO, intégrée au groupe Heroiks, l’un des principaux acteurs indépendants du conseil en stratégies…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 67 contacts → | ||||
Indirect evidence “A lot of digital marketing falls flat when you take it abroad.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 60 contacts → | ||||
Indirect evidence “Rush Agency - это бутиковое digital-агентство полного цикла с индивидуальным подходом к каждому клиенту.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 58 contacts → | ||||
Partial evidence “We specialize in generating quality & unique content, provide best SEO services and end to end website solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 57 contacts → | ||||
Partial evidence “SEO Experts in Thailand.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 56 contacts → | ||||
Partial evidence “TopOnSeek cung cấp các dịch vụ SEO toàn diện cho website của bạn, trong đó bao gồm dịch vụ: 1.Auditing/Kiểm tra lỗi SEO và Kèm giải pháp xử lý, 2.Tư vấn chiến lược SEO - Nghiên…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: multilingual SEO agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names multilingual SEO agencies.
- Partial evidence
- Its own public description names part of multilingual SEO agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name multilingual SEO agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 2,539 multilingual SEO agencies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,905 reachable decision-makers.
Free signup · no credit card
Multilingual SEO agencies worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 multilingual SEO agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for multilingual SEO agencies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “multilingual SEO agencies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names multilingual SEO agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among multilingual SEO agencies, and records with no verified work email.
- 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 its RevenueBase Smart Search 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, 1,905 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 29, 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.
Multilingual SEO agencies by location
10 lists · largest firstEvery Multilingual SEO agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Multilingual SEO agencies based in the United States373
- Multilingual SEO agencies based in India242
- Multilingual SEO agencies based in the United Kingdom188
- Multilingual SEO agencies based in France129
- Multilingual SEO agencies based in Germany106
- Multilingual SEO agencies based in Spain100
- Multilingual SEO agencies based in Canada59
- Multilingual SEO agencies based in Poland59
- Multilingual SEO agencies based in the Netherlands44
Cities
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names multilingual SEO agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many multilingual SEO agencies are there worldwide?
RevenueBase identified 2,539 multilingual SEO agencies worldwide 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?
Clickout Media, headquartered in Naxxar, tops this list with the largest team on record.
Which country has the most multilingual SEO agencies?
The United States leads with 373 companies, followed by India (242) and the United Kingdom (188). Every multilingual SEO agencies list by country and city is linked on this page.
Which city has the most multilingual SEO agencies?
London leads with 56 headquartered companies, followed by Dhaka (27) and Paris (23).
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 1,905 verified decision-maker contacts tracked across these 2,539 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,539 multilingual SEO agencies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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 Smart Search, 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.