Company lists · Data refreshed September 2026
Top 25 Professional certificate language programs worldwide
RevenueBase identified 2,620 professional certificate language programs worldwide as of September 2026 and tracks 45,886 professional contacts across them, including 2,713 with verified work emails. Spain is the largest market and Madrid the largest hub.
This list covers professional certificate language programs 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 professional certificate language programs 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 professional certificate language programs worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,273 contacts → | ||||
Partial 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. | |||||
| 2 | 1,580 contacts → | ||||
Indirect evidence “A partir de uma simples escola iniciou-se a construção de uma grandiosa rede de ensino, que já atravessou as fronteiras do nosso país.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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. | |||||
| 4 | 537 contacts → | ||||
Partial evidence “Effective, practical and always with maximum flexibility: Berlitz is your partner for foreign languages, intercultural know-how, and business skills.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 480 contacts → | ||||
Partial evidence “British Institutes, founded in 1973 and currently working with over qualified examiners, certifies language skills according to the standards of the Council of Europe (COE) which…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 410 contacts → | ||||
Indirect evidence “İlk şubesini 2005 yılında Kadıköy Halitağa'da açmıştır.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 398 contacts → | ||||
Indirect evidence “Tronwell, con más de 35 años de trayectoria y más de estudiantes imparte cursos de inglés bajo una metodología única que permite estudiar con la mayor flexibilidad horaria.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 345 contacts → | ||||
Indirect evidence “Fundado em 1975, o ASLAN tem vasta experiência no ensino do inglês e espanhol.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 297 contacts → | ||||
Partial evidence “The International House World Organisation (IHWO) is one of the largest and oldest groups of language schools in the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 279 contacts → | ||||
Indirect evidence “Wall Street English, leader de la formation à l’anglais, la mieux adaptée à leur métier et aussi la mieux adaptée à votre entreprise.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 276 contacts → | ||||
Partial evidence “Established in 1985, Diplomatic Language Services provides exceptional language training, translation, interpretation, and linguist testing to federal and state government…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 273 contacts → | ||||
Partial evidence “Berlitz is the world's premier provider of language training and intercultural services, with a footprint in more than 70 countries.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 263 contacts → | ||||
Indirect evidence “Founded in 1957, the Hellenic American Union is non-profit association with historic ties to the United States and partnerships with European and American cultural and educational…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 229 contacts → | ||||
Indirect evidence “Wir sind der Bildungsanbieter für alle, der Mehrsprachigkeit im Sinne des Europarates und der Europäischen Kommission ernst nimmt: So viele Sprachen aus einer Hand bekommen Sie…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 223 contacts → | ||||
Partial evidence “Eton Institute operates with the understanding that languages, communication, and culture are fundamental to the human experience and necessary for an individual and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 216 contacts → | ||||
Partial evidence “Since 1975, CERAN, member of the Chateauform' Group, has been a leader for intensive language courses and cross-cultural training.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 193 contacts → | ||||
Indirect evidence “Criada em 1883 por um comitê de personalidades como Jules Vernes e Louis Pasteur, a Aliança Francesa tem a missão de promover a língua e a cultura francesa no exterior.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 176 contacts → | ||||
Partial evidence “Linguaphone est un acteur "Incontournable" de la formation professionnelle linguistique (classement 2022 du magazine Décideurs).” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 170 contacts → | ||||
Indirect evidence “Dal 1952 Il British School Group insegna la lingua inglese agli italiani.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 170 contacts → | ||||
Indirect evidence “Berlitz Egypt is a franchisee of the Berlitz Corporation, a globally recognized education company founded in 1878.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 164 contacts → | ||||
Strong evidence “ALTA is an employee-owned language services company specializing in enterprise-level translation services, language proficiency testing, and innovative language training programs.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 153 contacts → | ||||
Indirect evidence “For over 35 years, we’ve served clients including the U.S.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 148 contacts → | ||||
Partial evidence “International House Madrid is part of International House World Organisation, a global network of 130+ affiliated language schools in 45+ countries.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 138 contacts → | ||||
Strong evidence “Avant, The Language Proficiency Company, is your one-stop provider for learning, assessment, and certification.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 134 contacts → | ||||
Indirect evidence “Great Things Start Here!” 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: professional certificate language programs. 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 professional certificate language programs.
- Partial evidence
- Its own public description names part of professional certificate language programs, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name professional certificate language programs. 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 2,620 professional certificate language programs worldwide
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Professional certificate language programs 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 professional certificate language programs, 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 professional certificate language programs are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “professional certificate language programs”. 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 professional certificate language programs), 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 professional certificate language programs, 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, 2,713 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.
Professional certificate language programs by location
9 lists · largest firstEvery Professional certificate language programs list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Professional certificate language programs based in Spain258
- Professional certificate language programs based in Italy228
- Professional certificate language programs based in France185
- Professional certificate language programs based in Brazil176
- Professional certificate language programs based in Germany114
- Professional certificate language programs based in the United States95
- Professional certificate language programs based in Mexico87
- Professional certificate language programs based in the United Kingdom63
- Professional certificate language programs based in Canada35
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 professional certificate language programs, 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 professional certificate language programs are there worldwide?
RevenueBase identified 2,620 professional certificate language programs 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?
Berlitz Corporation, headquartered in Princeton, tops this list with the largest team on record.
Which country has the most professional certificate language programs?
Spain leads with 258 companies, followed by Italy (228) and France (185). Every professional certificate language programs list by country and city is linked on this page.
Which city has the most professional certificate language programs?
Madrid leads with 47 headquartered companies, followed by Sao Paulo (34) and London (30).
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 2,713 verified decision-maker contacts tracked across these 2,620 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.