Company lists · Data refreshed September 2026

Top 25 Multinational SEO companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 7,850 companies tracked

RevenueBase identified 7,850 multinational SEO companies worldwide as of September 2026 and tracks 41,304 professional contacts across them, including 5,634 with verified work emails. The United States is the largest market and London the largest hub.

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

7,850Companies

41,304Contacts tracked

5,634Verified emails

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The 25 largest multinational SEO companies worldwide

Ranked by team size

Top 25 of 7,850 multinational SEO companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to multinational 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 21, 2026	n/a	825 contacts →
	Partial evidence “Since its inception in 1997, SEO Inc.” Source: RevenueBase Database · checked Sep 21, 2026
2	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
3	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
4	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
5	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
6	Ics-Digital	Partial evidence	Leeds, United KingdomHQ checked Sep 21, 2026	51-200	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 21, 2026
7	Liveseo	Partial evidence	Maringá, BrazilHQ checked Sep 21, 2026	51-200	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 21, 2026
8	Semalt	Partial evidence	Kyiv, UkraineHQ checked Sep 21, 2026	51-200	127 contacts →
	Partial evidence “Semalt is a results-driven, technology-inspired SEO company.” Source: RevenueBase Database · checked Sep 21, 2026
9	Activant Solutions PVT Ltd, Jaipur	Indirect evidence	Jaipur, IndiaHQ checked Sep 21, 2026	51-200	125 contacts →
	Indirect evidence “With more than 15 years in business and a highly experienced and professional team of more than 100 team members; Activant Solutions Private Limited, founded in 2005 by the…” Source: RevenueBase Database · checked Sep 21, 2026
10	SEOP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 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 21, 2026
11	Leave Code Technologies Pvt. LTD	Indirect evidence	Laxmi Nagar, IndiaHQ checked Sep 21, 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 21, 2026
12	Hennessey Digital	Partial evidence	North Hollywood, CA, United StatesHQ checked Sep 21, 2026	51-200	115 contacts →
	Partial evidence “Named to Fortune’s 50 Best Workplaces in Advertising & Marketing, Hennessey Digital is an award-winning digital marketing agency specializing in SEO for lawyers and other online…” Source: RevenueBase Database · checked Sep 21, 2026
13	Grizzly NEW Marketing	Partial evidence	Breda, NetherlandsHQ checked Sep 21, 2026	51-200	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 21, 2026
14	Bigseo	Partial evidence	Barcelona, SpainHQ checked Sep 21, 2026	51-200	108 contacts →
	Partial evidence “En nuestra agencia SEO en Barcelona somos unos apasionados del posicionamiento web.” Source: RevenueBase Database · checked Sep 21, 2026
15	Think BIZ Solutions	Partial evidence	Noida, IndiaHQ checked Sep 21, 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 21, 2026
16	Savit Interactive	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	51-200	102 contacts →
	Indirect evidence “Since 2004, Savit Interactive has been at the forefront of digital marketing, empowering businesses across India, the US, UK, Australia, Dubai, and more to build a strong and…” Source: RevenueBase Database · checked Sep 21, 2026
17	JVWEB	Partial evidence	Montpellier, FranceHQ checked Sep 21, 2026	51-200	100 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 21, 2026
18	Ranks Digital Media	Indirect evidence	Ghaziabad, IndiaHQ checked Sep 21, 2026	51-200	100 contacts →
	Indirect evidence “Stop chasing algorithms.” Source: RevenueBase Database · checked Sep 21, 2026
19	GTV SEO	Partial evidence	Hồ Chí Minh, VietnamHQ checked Sep 21, 2026	51-200	98 contacts →
	Partial evidence “Dịch vụ Seo của Công ty GTV SEO giúp các doanh nghiệp không chỉ có thêm nhiều khách hàng và lợi nhuận hàng tháng mà còn giúp cho các doanh nghiệp xây dựng thương hiệu và chỗ đứng…” Source: RevenueBase Database · checked Sep 21, 2026
20	Finixio	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	96 contacts →
	Partial evidence “Finixio is UK based remote first Marketing & SEO Agency helping clients all over the world.” Source: RevenueBase Database · checked Sep 21, 2026
21	Algoritz Technologies	Indirect evidence	Chennai, IndiaHQ checked Sep 21, 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 21, 2026
22	Direct Online Marketing	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 21, 2026	11-50	89 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 21, 2026
23	Seoprofy	Partial evidence	Orlando, FL, United StatesHQ checked Sep 21, 2026	51-200	89 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 21, 2026
24	Jaywing Australia	Indirect evidence	Millers Point, AustraliaHQ checked Sep 21, 2026	51-200	88 contacts →
	Indirect evidence “Jaywing is a data science led search and online media specialist with an integrated approach to marketing.” Source: RevenueBase Database · checked Sep 21, 2026
25	Loopex Digital	Indirect evidence	Yerevan, ArmeniaHQ checked Sep 21, 2026	11-50	88 contacts →
	Indirect evidence “Who are we?” 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: multinational 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 multinational SEO companies.
Partial evidence: Its own public description names part of multinational SEO companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name multinational 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 7,850 multinational SEO companies worldwide

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Multinational SEO companies worldwide at a glance

As of Sep 21, 2026

13.6%Verified-email coverage

5.3Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

5,562

11-50

1,829

51-200

344

201-500

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 multinational 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: Every country. Country and city lists for multinational SEO companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “multinational 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 multinational 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 multinational 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, 5,634 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.

Multinational SEO companies by location

31 lists · largest first

Every Multinational 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 multinational 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 multinational SEO companies are there worldwide?

RevenueBase identified 7,850 multinational 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 multinational SEO companies?

The United States leads with 1,435 companies, followed by India (933) and the United Kingdom (566). Every multinational SEO companies list by country and city is linked on this page.

Which city has the most multinational SEO companies?

London leads with 161 headquartered companies, followed by New Delhi (87) and Dhaka (70).

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 5,634 verified decision-maker contacts tracked across these 7,850 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.