Company lists · Data refreshed September 2026

Top 25 International SEO companies worldwide

Name: International SEO companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 4,551 companies tracked

RevenueBase identified 4,551 international SEO companies worldwide as of September 2026 and tracks 26,236 professional contacts across them, including 4,378 with verified work emails and 2,512 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers international SEO companies 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 4, 2026. Country and city lists for international SEO companies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

4,551Companies

26,236Contacts tracked

4,378Verified emails

2,512Mobile numbers

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The 25 largest international SEO companies worldwide

Ranked by team size

Top 25 of 4,551 international SEO companies worldwide, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to international SEO companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SEO INC	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 4, 2026	n/a	825 contacts →
	Partial evidence “Since its inception in 1997, SEO Inc.” Source: RevenueBase Database · checked Sep 4, 2026
2	Imark Infotech Pvt. LTD	Indirect evidence	Chandigarh, IndiaHQ checked Sep 4, 2026	201-500	629 contacts →
	Indirect evidence “With a vision of delivering innovative solutions through cutting-edge technology, Mr.” Source: RevenueBase Database · checked Sep 4, 2026
3	KPL Tech Solution Pvt. LTD	Indirect evidence	Middletown, DE, United StatesHQ checked Sep 4, 2026	201-500	390 contacts →
	Indirect evidence “Do you want to see your business on heights?” Source: RevenueBase Database · checked Sep 4, 2026
4	Boostability	Partial evidence	Lehi, UT, United StatesHQ checked Sep 4, 2026	201-500	330 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 4, 2026
5	Futur Digital	Indirect evidence	Boulogne-Billancourt, FranceHQ checked Sep 4, 2026	201-500	163 contacts →
	Indirect evidence “Votre agence de Marketing Digital, spécialiste du référencement local depuis 2009 Chez Futur Digital, nous comprenons l'importance cruciale d'une présence digitale robuste pour…” Source: RevenueBase Database · checked Sep 4, 2026
6	Liveseo	Partial evidence	Maringa, BrazilHQ checked Sep 4, 2026	51-200	151 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 4, 2026
7	SEOP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	121 contacts →
	Partial evidence “SEOP is one of the leaders in the Search Engine Optimization industry and was co-founded by SEO experts that thrive on a combination of in-depth expertise and creative, forward…” Source: RevenueBase Database · checked Sep 4, 2026
8	Leave Code Technologies Pvt. LTD	Indirect evidence	Laxmi Nagar, IndiaHQ checked Sep 4, 2026	11-50	120 contacts →
	Indirect evidence “Leave Code offers you the best digital marketing services for your products and services.” Source: RevenueBase Database · checked Sep 4, 2026
9	Local Splash	Partial evidence	Fountain Valley, CA, United StatesHQ checked Sep 4, 2026	51-200	117 contacts →
	Partial evidence “Local Splash is the leading local SEO service that specializes in getting our clients high rankings in local search engine results.” Source: RevenueBase Database · checked Sep 4, 2026
10	Grizzly NEW Marketing	Partial evidence	Breda, NetherlandsHQ checked Sep 4, 2026	51-200	111 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 4, 2026
11	Bigseo	Partial evidence	Barcelona, SpainHQ checked Sep 4, 2026	51-200	110 contacts →
	Partial evidence “En nuestra agencia SEO en Barcelona somos unos apasionados del posicionamiento web.” Source: RevenueBase Database · checked Sep 4, 2026
12	Think BIZ Solutions	Partial evidence	Noida, IndiaHQ checked Sep 4, 2026	51-200	103 contacts →
	Partial evidence “We are specialists in SEO & Web Designing We are extremely skilled and extremely experienced provider of all of the Web solutions available.” Source: RevenueBase Database · checked Sep 4, 2026
13	JVWEB	Partial evidence	Montpellier, FranceHQ checked Sep 4, 2026	51-200	102 contacts →
	Partial evidence “Founded in 2004, JVWEB is a leading digital marketing agency in France and in Europe, managing SEO, SEA (Search Engine Adverising), SMA (Social Media Advertising) and Performance…” Source: RevenueBase Database · checked Sep 4, 2026
14	Algoritz Technologies	Indirect evidence	Chennai, IndiaHQ checked Sep 4, 2026	51-200	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 4, 2026
15	Direct Online Marketing	Indirect evidence	Pittsburgh, WV, United StatesHQ checked Sep 4, 2026	11-50	91 contacts →
	Indirect evidence “Direct Online Marketing (DOM) is a digital marketing agency and Top 1% Premier Google Partner that has been helping businesses grow confidently online since 2006.” Source: RevenueBase Database · checked Sep 4, 2026
16	Seoprofy	Partial evidence	Orlando, FL, United StatesHQ checked Sep 4, 2026	51-200	88 contacts →
	Partial evidence “SeoProfy is your strategic SEO and AI visibility partner for organic and AI visibility that brings real ROI.” Source: RevenueBase Database · checked Sep 4, 2026
17	Paper Street Media	Indirect evidence	Miami, FL, United StatesHQ checked Sep 4, 2026	11-50	87 contacts →
	Indirect evidence “With more than a decade of experience Paper Street Media can help you leverage manpower and increase your capacity for marketing and web design projects.” Source: RevenueBase Database · checked Sep 4, 2026
18	Kadabra Inc. Israel	Partial evidence	Herzliya, IsraelHQ checked Sep 4, 2026	51-200	86 contacts →
	Partial evidence “Kadabra is an online marketing powerhouse We specialize in SEO, Media, PPC, ASO and Business Analytics.” Source: RevenueBase Database · checked Sep 4, 2026
19	ATLS	Partial evidence	Barcelona, SpainHQ checked Sep 4, 2026	51-200	86 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 4, 2026
20	Claneo Seo, GEO & Content Marketing	Strong evidence	Berlin, GermanyHQ checked Sep 4, 2026	51-200	79 contacts →
	Strong evidence “Wir sind eine mehrfach ausgezeichnete Agentur für internationales SEO, GEO und Content Marketing mit Sitz in Berlin.” Source: RevenueBase Database · checked Sep 4, 2026
21	Mediavision	Indirect evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	78 contacts →
	Indirect evidence “At MediaVision, we believe there's potential hidden in every search.” Source: RevenueBase Database · checked Sep 4, 2026
22	BKA Content	Partial evidence	North Ogden, UT, United StatesHQ checked Sep 4, 2026	11-50	77 contacts →
	Partial evidence “BKA Content is an industry-leading SEO services and digital marketing company.” Source: RevenueBase Database · checked Sep 4, 2026
23	PRO WEB Digital Consulting	Partial evidence	San Donato Milanese, ItalyHQ checked Sep 4, 2026	1,001-5,000	76 contacts →
	Partial 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 4, 2026
24	Delante SEO SEM Agency	Strong evidence	Kraków, PolandHQ checked Sep 4, 2026	51-200	75 contacts →
	Strong evidence “We’re an international Search Agency: SEO+ SEM +AI.” Source: RevenueBase Database · checked Sep 4, 2026
25	Eology Gmbh	Indirect evidence	Volkach, GermanyHQ checked Sep 4, 2026	51-200	74 contacts →
	Indirect evidence “eology ist eine auf Suchmaschinenmarketing spezialisierte Online Marketing Agentur.” Source: RevenueBase Database · checked Sep 4, 2026

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: international SEO companies. 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 international SEO companies.
Partial evidence: Its own public description names part of international SEO companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international SEO companies. 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 4,551 international SEO companies worldwide

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International SEO companies worldwide at a glance

As of Sep 4, 2026

16.7%Verified-email coverage

9.6%Mobile-number coverage

5.8Average contacts per company

1-10Median size (employees)

3.0%Largest-city concentration · London

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

3,185

11-50

1,090

51-200

181

201-500

501-1,000

1,001-5,000

10001+

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 international SEO companies, 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: 20 countries, largest first: the United States, India, the United Kingdom, Germany, France, Canada, Spain, Australia, the Netherlands, Poland and 10 more. Country and city lists for international SEO companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “international SEO companies”. 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 international SEO companies), 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 international SEO companies, 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, 4,378 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 between September 4, 2026 and September 14, 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.

International SEO companies by location

29 lists · largest first

Every International SEO companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 international SEO companies, 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 international SEO companies are there worldwide?

RevenueBase identified 4,551 international SEO companies 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?

SEO INC, headquartered in Carlsbad, tops this list with the largest team on record.

Which country has the most international SEO companies?

The United States leads with 1,540 companies, followed by India (719) and the United Kingdom (509). Every international SEO companies list by country and city is linked on this page.

Which city has the most international SEO companies?

London leads with 138 headquartered companies, followed by New Delhi (76) and New York (63).

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 4,378 verified decision-maker contacts tracked across these 4,551 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 4, 2026 and September 14, 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 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.