Company lists · Data refreshed September 2026
Top 25 Certified translation services worldwide
RevenueBase identified 5,482 certified translation services worldwide as of September 2026 and tracks 35,129 professional contacts across them, including 3,138 with verified work emails. The United States is the largest market and London the largest hub.
This list covers certified translation services 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 19, 2026. Country and city lists for certified translation services 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 certified translation services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 506 contacts → | ||||
Partial evidence “SPRÅKSERVICE is Sweden's leading agency for interpreting and translation services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 487 contacts → | ||||
Indirect evidence “How can we help you?” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 422 contacts → | ||||
Strong evidence “Mars Translation is an ISO-certified translation service provider that boasts a global network of native translators proficient in over 230 languages and 25+ industries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 307 contacts → | ||||
Partial evidence “Translation Services * Interpreter Services * Medical Interpreter Training * Language Services Interpreters and Translators, Inc.(iTi) is a well-respected and award-winning…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 276 contacts → | ||||
Indirect evidence “Interpreter & translator services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 220 contacts → | ||||
Partial evidence “TRSB, a trusted name in translation, in North America and around the world- Secure, integrated management systems for high volumes and total confidentiality - In-house…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 220 contacts → | ||||
Partial evidence “India's best Language Service Provider (LSP) with 36 years of industry experience in the language industry, specializing in Translation and Localization.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 191 contacts → | ||||
Partial evidence “Day Translations (daytranslations.com) is a professional document translation company dedicated to providing the most accurate translations on the planet.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 188 contacts → | ||||
Strong evidence “Versacom is the country’s largest 100% Canadian-owned professional translation firm and holds language-industry exclusive quality certifications CAN-CGSB-131-10-2008 and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 179 contacts → | ||||
Partial evidence “ISO 9001, ISO17100 and ISO27001 Certified “There is always a better way” This is our very core belief which we hold closely in our hearts here at SuccessGlo, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 178 contacts → | ||||
Indirect evidence “KERN Global Language Services is a leading provider of language services worldwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 171 contacts → | ||||
Partial evidence “Leader in English – Spanish Translation Services Trusted Translations, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 140 contacts → | ||||
Partial evidence “Global Voices is an international translation and interpretation services company, established in 2004 in Stirling, Scotland.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 136 contacts → | ||||
Partial evidence “GTE Localize is a premier global translation agency, delivering top-tier language services including translation, localization, subtitling, and transcription.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 133 contacts → | ||||
Partial evidence “All Languages is Canada's oldest continually operating multilingual translation and interpreting company.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 133 contacts → | ||||
Partial evidence “Tomedes is a professional translation company founded in 2007.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 130 contacts → | ||||
Strong evidence “The Spanish Group LLC is a first-class certified translation service that reliably serves the modern needs of global trade, law, and immigration.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 116 contacts → | ||||
Indirect evidence “Across 100+ languages, our linguists connect brands and institutions with their global audiences.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 115 contacts → | ||||
Partial evidence “Intertranslations is a leading international translation service provider established in 1996 with offices in London, Paris and Athens.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 111 contacts → | ||||
Partial evidence “Language Scientific is a US-based global provider of translation and localization services, specializing in tailored solutions that address the specific needs of each industry and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 110 contacts → | ||||
Strong evidence “With more than 30 years’ experience in translation, localisation and content creation, Sandberg is an ISO 17100-certified translation company and centre of excellence for…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 102 contacts → | ||||
Partial evidence “We deliver on-site interpreting, telephone interpreting, video interpreting, and document translation.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 99 contacts → | ||||
Indirect evidence “WhP was acquired by LanguageWire.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 97 contacts → | ||||
Indirect evidence “Rooted in language and cultural accuracy, our localization solutions have laid the foundation for us to emerge as a legacy of unsurpassed quality worldwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 96 contacts → | ||||
Partial evidence “TradOnline is a professional translation agency created 10 years ago which has over 300 regular clients.” Source: RevenueBase Database · checked Sep 19, 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: certified translation services. 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 certified translation services.
- Partial evidence
- Its own public description names part of certified translation services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name certified translation services. 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 5,482 certified translation services worldwide
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Certified translation services worldwide at a glance
As of Sep 19, 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 certified translation services, 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 certified translation services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “certified translation services”. 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 certified translation services), 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 certified translation services, 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, 3,138 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 19, 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.
Certified translation services by location
19 lists · largest firstEvery Certified translation services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Certified translation services based in the United States645
- Certified translation services based in the United Kingdom292
- Certified translation services based in Spain280
- Certified translation services based in Germany262
- Certified translation services based in France195
- Certified translation services based in Brazil185
- Certified translation services based in Türkiye183
- Certified translation services based in Canada161
- Certified translation services based in Italy156
- Certified translation services based in the United Arab Emirates135
- Certified translation services based in India132
- Certified translation services based in Poland112
- Certified translation services based in the Netherlands103
- Certified translation services based in Mexico91
- Certified translation services based in Belgium57
- Certified translation services based in Australia42
- Certified translation services based in Switzerland37
- Certified translation services based in Israel33
- Certified translation services based in Austria26
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 certified translation services, 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 certified translation services are there worldwide?
RevenueBase identified 5,482 certified translation services 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?
Språkservice Sverige AB, headquartered in Worldwide, tops this list with the largest team on record.
Which country has the most certified translation services?
The United States leads with 645 companies, followed by the United Kingdom (292) and Spain (280). Every certified translation services list by country and city is linked on this page.
Which city has the most certified translation services?
London leads with 111 headquartered companies, followed by Sao Paulo (92) and Dubai (66).
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 3,138 verified decision-maker contacts tracked across these 5,482 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 19, 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.