Company lists · Data refreshed September 2026
Top 25 Esl tutoring companies worldwide
RevenueBase identified 8,378 esl tutoring companies worldwide as of September 2026 and tracks 92,891 professional contacts across them, including 4,022 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.
This list covers esl tutoring 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 20, 2026. Country and city lists for esl tutoring 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 esl tutoring companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,171 contacts → | ||||
Indirect evidence “We are Wall Street English, the premier provider of English language instruction for individuals and corporate clients around the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,273 contacts → | ||||
Indirect evidence “Berlitz Corporation is a world-leading language and cultural training provider with over 140 years of experience.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,572 contacts → | ||||
Indirect evidence “The Cambly app gives English learners instant 1-on-1 access to friendly native speakers over video chat 24/7.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,180 contacts → | ||||
Partial evidence “Academic Society Online, or Acadsoc, is an international one-stop shop for ESL learning and education consultancy online.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,672 contacts → | ||||
Indirect evidence “Founded in 2011, headquartered in Singapore, 51Talk is a world leading EdTech company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,637 contacts → | ||||
Indirect evidence “With engaging 1-on-1 language lessons and materials based on our students' needs and interests, Engoo brings people together and helps them understand one another through the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 889 contacts → | ||||
Indirect evidence “Tutlo to najszybciej rozwijająca się platforma do nauki języka angielskiego w Polsce.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 614 contacts → | ||||
Partial evidence “CHUNGDAHM Learning is a market leader in the Korean ESL industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 609 contacts → | ||||
Indirect evidence “goFLUENT acquired the assets of Learnship Networks GmbH on December 1st, 2025.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 587 contacts → | ||||
Indirect evidence “Somos un centro de idiomas que se caracteriza por contar con el mejor curso de inglés en México.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 526 contacts → | ||||
Indirect evidence “A Fluency Academy nasceu com a missão de tornar o Brasil e o mundo lugares melhores, transformando a barreira da comunicação em uma ponte para novas experiências!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 525 contacts → | ||||
Indirect evidence “BRASAS English Course | Ensino de inglês com método exclusivo e resultados comprovados Desde 1966, o BRASAS oferece um método único de ensino de inglês focado em quem tem o…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 453 contacts → | ||||
Indirect evidence “En Quick Learning primero te enseñamos a pensar y hablar en inglés; sin ver nada escrito y sin reglas gramaticales; y cuando ya lo hablas, entonces te enseñamos a leer y a…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 449 contacts → | ||||
Partial evidence “Founded in 2003, LatinHire is responsible for the online tutoring operations of several leading education companies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 361 contacts → | ||||
Indirect evidence “Founded in 1983, HESS is the largest private language school in Taiwan.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 356 contacts → | ||||
Indirect evidence “My English School è una realtà innovativa orientata all'apprendimento della lingua inglese che pone al centro della didattica le esigenze e i bisogni reali degli interessati.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 338 contacts → | ||||
Indirect evidence “Wall Street English is the premier provider of English instruction for individuals and corporate clients around the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 321 contacts → | ||||
Indirect evidence “O IBEU é mais do que um curso de inglês!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 208 contacts → | ||||
Indirect evidence “Flalingo is a global AI-powered online English learning platform for learners around the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 201 contacts → | ||||
Indirect evidence “Number 16 School es un centro de inglés único y exclusivo.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 201 contacts → | ||||
Indirect evidence “EF Education First is seeking qualified native English speaking teachers to join our academic teams in China.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 196 contacts → | ||||
Indirect evidence “It’s the leading language school to adult people with an innovative methodology and the best didactic material in the market, Wise Up offers the students the possibility of…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 177 contacts → | ||||
Partial evidence “EDGE Tutor is Asia’s fastest-growing tutoring outsourcing provider, bringing the human edge in digital learning to education companies worldwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 171 contacts → | ||||
Indirect evidence “My English School is an innovative provider of English language training.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 158 contacts → | ||||
Indirect evidence “Language Link was founded in London in 1975 and since then it has been teaching students in the UK and several other countries delivering a high-quality learning experience and…” Source: RevenueBase Database · checked Sep 20, 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: esl tutoring 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 esl tutoring companies.
- Partial evidence
- Its own public description names part of esl tutoring companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name esl tutoring 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 8,378 esl tutoring companies worldwide
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Esl tutoring companies worldwide at a glance
As of Sep 20, 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 esl tutoring 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 esl tutoring companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “esl tutoring 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 esl tutoring 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 esl tutoring 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, 4,022 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 20, 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.
Esl tutoring companies by location
23 lists · largest firstEvery Esl tutoring companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Esl tutoring companies based in Brazil1,166
- Esl tutoring companies based in the United States642
- Esl tutoring companies based in Spain606
- Esl tutoring companies based in the United Kingdom418
- Esl tutoring companies based in Poland282
- Esl tutoring companies based in Italy255
- Esl tutoring companies based in France233
- Esl tutoring companies based in Mexico218
- Esl tutoring companies based in Argentina204
- Esl tutoring companies based in Canada178
- Esl tutoring companies based in India166
- Esl tutoring companies based in Germany147
- Esl tutoring companies based in Colombia141
- Esl tutoring companies based in Türkiye121
- Esl tutoring companies based in Chile81
- Esl tutoring companies based in Switzerland74
- Esl tutoring companies based in the Netherlands66
- Esl tutoring companies based in Israel37
- Esl tutoring companies based in Singapore35
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 esl tutoring 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 esl tutoring companies are there worldwide?
RevenueBase identified 8,378 esl tutoring 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?
Wall Street English, headquartered in Barcelona, tops this list with the largest team on record.
Which country has the most esl tutoring companies?
Brazil leads with 1,166 companies, followed by the United States (642) and Spain (606). Every esl tutoring companies list by country and city is linked on this page.
Which city has the most esl tutoring companies?
Sao Paulo leads with 270 headquartered companies, followed by London (166) and Madrid (111).
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 4,022 verified decision-maker contacts tracked across these 8,378 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 20, 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.