Company lists · Data refreshed September 2026

Top 25 Enterprise SEO firms worldwide

Name: Enterprise SEO firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 22,738 companies tracked

RevenueBase identified 22,738 enterprise SEO firms worldwide as of September 2026 and tracks 169,637 professional contacts across them, including 18,021 with verified work emails. The United States is the largest market and London the largest hub.

This list covers enterprise SEO firms 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 21, 2026. Country and city lists for enterprise SEO firms 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 21, 2026 86% judged on-target in blind review

22,738Companies

169,637Contacts tracked

18,021Verified emails

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The 25 largest enterprise SEO firms worldwide

Ranked by team size

Top 25 of 22,738 enterprise SEO firms worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise SEO firms: 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	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	n/a	6,896 contacts →
	Indirect evidence “The way people search is changing.” Source: RevenueBase Database · checked Sep 21, 2026
2	SEO INC	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 21, 2026	n/a	825 contacts →
	Partial evidence “Since its inception in 1997, SEO Inc.” Source: RevenueBase Database · checked Sep 21, 2026
3	Imark Infotech Pvt. LTD	Indirect evidence	Chandigarh, IndiaHQ checked Sep 21, 2026	201-500	629 contacts →
	Indirect evidence “With a vision of delivering innovative solutions through cutting-edge technology, Mr.” Source: RevenueBase Database · checked Sep 21, 2026
4	LWS	Indirect evidence	Almada, PortugalHQ checked Sep 21, 2026	n/a	595 contacts →
	Indirect evidence “A Empresa Lojawebsite!LWS - Criação de Sites Profissionais, Lda, tem como principal objectivo usar a Internet como um meio de comunicação para alavancar o crescimento de PME's, e…” Source: RevenueBase Database · checked Sep 21, 2026
5	Wildnet Technologies	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	201-500	590 contacts →
	Partial evidence “Wildnet Technologies - Best Digital Marketing Agency \| White Label Services for Growing Agencies \| Results-Driven AI SEO Services We don't just run campaigns-we build growth…” Source: RevenueBase Database · checked Sep 21, 2026
6	Smart Solutions	Indirect evidence	United StatesHQ checked Sep 21, 2026	n/a	534 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
7	Clickout Media	Partial evidence	Naxxar, MaltaHQ checked Sep 21, 2026	201-500	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 21, 2026
8	KPL Tech Solution Pvt. LTD	Indirect evidence	Middletown, DE, United StatesHQ checked Sep 21, 2026	201-500	390 contacts →
	Indirect evidence “Do you want to see your business on heights?” Source: RevenueBase Database · checked Sep 21, 2026
9	Boostability	Partial evidence	Lehi, UT, United StatesHQ checked Sep 21, 2026	201-500	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 21, 2026
10	Coalition Technologies	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	201-500	320 contacts →
	Partial evidence “Coalition Technologies is one of the leading SEO & web design agencies in the United States.” Source: RevenueBase Database · checked Sep 21, 2026
11	Stan Ventures	Indirect evidence	Lake Bluff, IL, United StatesHQ checked Sep 21, 2026	201-500	319 contacts →
	Indirect evidence “We run the link-building operation behind a lot of agencies you've probably heard of.” Source: RevenueBase Database · checked Sep 21, 2026
12	Clearpath Technology PVT LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 21, 2026	501-1,000	300 contacts →
	Indirect evidence “Clearpath Technology is managed and owned by dedicated and highly experienced team comprising of:* Internet Marketers * Search Engine Optimizers * Web Designers * Web Developers *…” Source: RevenueBase Database · checked Sep 21, 2026
13	Acodez IT Solutions Pvt. LTD	Indirect evidence	Calicut, IndiaHQ checked Sep 21, 2026	51-200	257 contacts →
	Indirect evidence “Acodez is a leading web design and online marketing agency based in India, renowned for our exceptional services and accolades.” Source: RevenueBase Database · checked Sep 21, 2026
14	Mediaveille - MV Group	Indirect evidence	Cesson-sévigné, FranceHQ checked Sep 21, 2026	51-200	213 contacts →
	Indirect evidence “MEDIAVEILLE est une agence de conseil et de services de marketing online qui met en œuvre des stratégies de conquête et de fidélisation sur Internet.” Source: RevenueBase Database · checked Sep 21, 2026
15	Internet Marketing Inc. NOW REQ	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	203 contacts →
	Indirect evidence “IMI (now REQ) is a full-service digital marketing agency focused on omnichannel strategies and results.” Source: RevenueBase Database · checked Sep 21, 2026
16	Herold	Indirect evidence	Vienna, AustriaHQ checked Sep 21, 2026	51-200	190 contacts →
	Indirect evidence “Seit der Gründung in 1919 hat sich Herold laufend weiterentwickelt und ist heute Teil der group.one, die zu einer der führenden Unternehmensgruppen in Europa im Bereich Domains…” Source: RevenueBase Database · checked Sep 21, 2026
17	That Company	Indirect evidence	Leesburg, FL, United StatesHQ checked Sep 21, 2026	n/a	187 contacts →
	Indirect evidence “That Company is a White Label internet marketing firm with over 15 years of experience and a strong customer service core.” Source: RevenueBase Database · checked Sep 21, 2026
18	auroin.com	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	51-200	183 contacts →
	Partial evidence “Incorporated in 2010, AuroIN LLC is a premier digital marketing agency based in World Trade Center, New York, specializing in AI-driven SEO strategies that deliver measurable ROI.” Source: RevenueBase Database · checked Sep 21, 2026
19	Click Here Digital	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 21, 2026	51-200	167 contacts →
	Indirect evidence “Founded by Bo White in 1993 during the early stages of the Internet, Click Here Digital is a digital marketing and consulting firm that provides full-service digital marketing…” Source: RevenueBase Database · checked Sep 21, 2026
20	WP SEO AI	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 21, 2026	51-200	166 contacts →
	Indirect evidence “Even before AI-powered Search and platforms like ChatGPT or Perplexity started reshaping how people search, we anticipated the shift in user behaviour.” Source: RevenueBase Database · checked Sep 21, 2026
21	Futur Digital	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 21, 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 21, 2026
22	Gr0	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	51-200	157 contacts →
	Indirect evidence “At GR0, we are in the business of helping businesses.” Source: RevenueBase Database · checked Sep 21, 2026
23	V Digital Services	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 21, 2026	201-500	152 contacts →
	Indirect evidence “As one of the fastest-rising digital marketing agencies in the U.S, V Digital Services operates in more than 300 American cities, where we offer premier white-label solutions for…” Source: RevenueBase Database · checked Sep 21, 2026
24	Brandrep	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	152 contacts →
	Partial evidence “Local Marketing Company who specializes in helping small businesses with building and managing their online presence through Local SEO, Lead Generation, Local Directory submission…” Source: RevenueBase Database · checked Sep 21, 2026
25	GO Local Interactive	Partial evidence	Overland Park, KS, United StatesHQ checked Sep 21, 2026	51-200	150 contacts →
	Partial evidence “Go Local Interactive is a premium digital marketing agency specializing in SEO, PPC, Content, and Web products.” Source: RevenueBase Database · checked Sep 21, 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: enterprise SEO firms. 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 enterprise SEO firms.
Partial evidence: Its own public description names part of enterprise SEO firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise SEO firms. 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 22,738 enterprise SEO firms worldwide

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Enterprise SEO firms worldwide at a glance

As of Sep 21, 2026

10.6%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

16,293

11-50

5,282

51-200

858

201-500

161

501-1,000

1,001-5,000

5,001-10,000

10001+

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 enterprise SEO firms, 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 enterprise SEO firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “enterprise SEO firms”. 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 enterprise SEO firms), 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 enterprise SEO firms, 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, 18,021 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 21, 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.

Enterprise SEO firms by location

93 lists · largest first

Every Enterprise SEO firms 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 enterprise SEO firms, 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 enterprise SEO firms are there worldwide?

RevenueBase identified 22,738 enterprise SEO firms 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, headquartered in Melbourne, tops this list with the largest team on record.

Which country has the most enterprise SEO firms?

The United States leads with 5,165 companies, followed by India (2,749) and the United Kingdom (1,489). Every enterprise SEO firms list by country and city is linked on this page.

Which city has the most enterprise SEO firms?

London leads with 408 headquartered companies, followed by New Delhi (256) and New York (201).

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 18,021 verified decision-maker contacts tracked across these 22,738 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 21, 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.