Company lists · Data refreshed September 2026
Top 25 Startup SEO companies worldwide
RevenueBase identified 15,045 startup SEO companies worldwide as of September 2026 and tracks 69,537 professional contacts across them, including 8,945 with verified work emails. The United States is the largest market and London the largest hub.
This list covers startup 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 27, 2026. Country and city lists for startup 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.
The 25 largest startup SEO companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 825 contacts → | ||||
Partial evidence “Since its inception in 1997, SEO Inc.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 629 contacts → | ||||
Indirect evidence “With a vision of delivering innovative solutions through cutting-edge technology, Mr.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 428 contacts → | ||||
Indirect evidence “Within a short span, eBrandz has seen enormous growth.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 390 contacts → | ||||
Indirect evidence “Do you want to see your business on heights?” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 320 contacts → | ||||
Partial evidence “Coalition Technologies is one of the leading SEO & web design agencies in the United States.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 259 contacts → | ||||
Indirect evidence “AdsRole is a results-driven digital marketing company that helps businesses grow through smart advertising and proven growth strategies.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 134 contacts → | ||||
Indirect evidence “At essentials the agency, we help brands take control of their digital presence and dominate their online space, not just exist in it.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 128 contacts → | ||||
Indirect evidence “Mainstreethost specializes in everything you need to have a successful online presence, including search engine optimization, paid search marketing, website design, social media…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 127 contacts → | ||||
Partial evidence “Semalt is a results-driven, technology-inspired SEO company.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 126 contacts → | ||||
Indirect evidence “FIX - профессиональная компания, оказывающая полный спектр услуг в области интернет-маркетинга: разработка web-ресурсов и web-приложений, поисковая оптимизация и продвижение…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 120 contacts → | ||||
Indirect evidence “Leave Code offers you the best digital marketing services for your products and services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 116 contacts → | ||||
Partial evidence “SEOBROTHERS is a full-cycle SEO agency where search engine optimisation and digital marketing drive everything we do.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 112 contacts → | ||||
Indirect evidence “Publi-7 Communications est une agence de marketing interactif et de communication créée par l'ancien directeur général du magazine « Chez toît » appartenant à Quebecor Media.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 111 contacts → | ||||
Partial evidence “StudioHawk is Australia’s #1 dedicated SEO & AI Search agency.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 108 contacts → | ||||
Indirect evidence “As a business owner there are not many things that make you want to pull your hair out as much as figuring out how to gain new customers, phone calls, and visitors to your website.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 108 contacts → | ||||
Partial evidence “En nuestra agencia SEO en Barcelona somos unos apasionados del posicionamiento web.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 101 contacts → | ||||
Partial evidence “When visitors leave your website within seconds, what can your SEO agency do?” Source: RevenueBase Database · checked Sep 27, 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: startup 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 startup SEO companies.
- Partial evidence
- Its own public description names part of startup SEO companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name startup 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 15,045 startup SEO companies worldwide
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Startup SEO companies worldwide at a glance
As of Sep 27, 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 startup 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 startup SEO companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “startup 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 startup 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 startup 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, 8,945 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 27, 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.
Startup SEO companies by location
51 lists · largest firstEvery Startup SEO companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Startup SEO companies based in the United States3,366
- Startup SEO companies based in India2,036
- Startup SEO companies based in the United Kingdom960
- Startup SEO companies based in France478
- Startup SEO companies based in Pakistan471
- Startup SEO companies based in Germany431
- Startup SEO companies based in Canada417
- Startup SEO companies based in Australia366
- Startup SEO companies based in Spain340
- Startup SEO companies based in the Netherlands334
- Startup SEO companies based in Brazil174
- Startup SEO companies based in Poland158
- Startup SEO companies based in Italy138
- Startup SEO companies based in the United Arab Emirates119
- Startup SEO companies based in South Africa103
- Startup SEO companies based in Türkiye95
- Startup SEO companies based in Israel83
- Startup SEO companies based in Sweden77
- Startup SEO companies based in Ukraine74
- Startup SEO companies based in Switzerland67
- Startup SEO companies based in Denmark58
- Startup SEO companies based in Belgium55
- Startup SEO companies based in the Philippines55
- Startup SEO companies based in New Zealand50
- Startup SEO companies based in Austria49
- Startup SEO companies based in Ireland49
Cities
- Startup SEO companies based in London, United Kingdom251
- Startup SEO companies based in New Delhi, India186
- Startup SEO companies based in Noida, India137
- Startup SEO companies based in New York, United States116
- Startup SEO companies based in Los Angeles, United States101
- Startup SEO companies based in Toronto, Canada85
- Startup SEO companies based in Mumbai, India84
- Startup SEO companies based in Ahmedabad, India71
- Startup SEO companies based in Houston, United States65
- Startup SEO companies based in Hyderabad, India63
- Startup SEO companies based in Austin, United States55
- Startup SEO companies based in Denver, United States52
- Startup SEO companies based in Sydney, Australia50
- Startup SEO companies based in Melbourne, Australia49
- Startup SEO companies based in San Diego, United States47
- Startup SEO companies based in Chicago, United States46
- Startup SEO companies based in Las Vegas, United States42
- Startup SEO companies based in Miami, United States42
- Startup SEO companies based in San Francisco, United States39
- Startup SEO companies based in Atlanta, United States30
- Startup SEO companies based in Phoenix, United States30
- Startup SEO companies based in Tampa, United States30
- Startup SEO companies based in Orlando, United States28
- Startup SEO companies based in Seattle, United States28
- Startup SEO companies based in Vancouver, Canada28
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 startup 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 startup SEO companies are there worldwide?
RevenueBase identified 15,045 startup 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 startup SEO companies?
The United States leads with 3,366 companies, followed by India (2,036) and the United Kingdom (960). Every startup SEO companies list by country and city is linked on this page.
Which city has the most startup SEO companies?
London leads with 258 headquartered companies, followed by New Delhi (186) and Lahore (141).
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 8,945 verified decision-maker contacts tracked across these 15,045 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 27, 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.