Company lists · Data refreshed September 2026

Top 25 Sign language interpreting companies worldwide

RevenueBase identified 1,913 company matches for sign language interpreting companies worldwide as of September 2026 and tracks 51,301 professional contacts across them, including 6,256 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for sign language interpreting companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026. Country and city lists for sign language interpreting companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
1,913Companies
51,301Contacts tracked
6,256Verified emails
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The 25 largest sign language interpreting companies worldwide

Ranked by team size
Top 25 of 1,913 company matches for sign language interpreting companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMonterey, CA, United StatesHQ recorded Sep 29, 202610001+6,440 contacts →

Exact match

“LanguageLine Solutions is the world’s leading language solutions company.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchOverland Park, KS, United StatesHQ recorded Sep 29, 2026n/a5,096 contacts →

Exact match

“Language Access, Driven by Innovation.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 29, 202610001+2,863 contacts →

Exact match

“Sorenson is a global language services providers, combining assistive technology with human-centric accessibility solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchPhiladelphia, PA, United StatesHQ recorded Sep 29, 20261,001-5,0002,503 contacts →

Exact match

“GLOBO is a technology-enabled patient communication company, giving organizations the ability to communicate in any language, 24/7 through one simple platform.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchManchester, United KingdomHQ recorded Sep 29, 2026201-5001,145 contacts →

Exact match

“The world is a better, fairer place when everyone is understood.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchMiraflores, PeruHQ recorded Sep 29, 20261,001-5,000865 contacts →

Exact match

“At Interpretia, we help people understand one another through professional remote interpretation.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchSunrise, FL, United StatesHQ recorded Sep 29, 2026n/a833 contacts →

Exact match

“Voyce is a technology driven company, deeply committed to helping people in need facing language barriers, enabling them to easily and quickly communicate and get help.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchPortland, OR, United StatesHQ recorded Sep 29, 2026201-500623 contacts →

Exact match

“We provide on-demand interpreting services via phone and video.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchWinter Haven, United StatesHQ recorded Sep 29, 2026n/a617 contacts →

Exact match

“Multilingual Interpreters and Translators, a language service and business solutions Company based in Winter Haven, Florida.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchAustin, TX, United StatesHQ recorded Sep 29, 20261,001-5,000574 contacts →

Exact match

“Communication Service for the Deaf, Inc.(CSD) is a private, nonprofit organization dedicated to creating and providing technologies and services that benefit the deaf and hard of…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchWashington, DC, United StatesHQ recorded Sep 29, 202651-200557 contacts →

Exact match

“Jeenie is on a mission to end language barriers.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchMalmö, SwedenHQ recorded Sep 29, 202651-200506 contacts →

Exact match

“SPRÅKSERVICE is Sweden's leading agency for interpreting and translation services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-200487 contacts →

Exact match

“How can we help you?”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchSilver Spring, MD, United StatesHQ recorded Sep 29, 2026201-500475 contacts →

Exact match

“Welcome to Ad Astra, a leading global communication solutions and language services brand.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchSpring Valley, CA, United StatesHQ recorded Sep 29, 202651-200413 contacts →

Exact match

“Hanna Interpreting is an award-winning, woman and minority-owned small business providing interpretation, translation, and transcription services nationwide.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchRochdale, United KingdomHQ recorded Sep 29, 202651-200363 contacts →

Exact match

“Language Empire was established in 2001.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchParis La Défense, United StatesHQ recorded Sep 29, 2026501-1,000339 contacts →

Exact match

“Ubiqus language services expand under the Acolad brand.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchGreenwood Village, CO, United StatesHQ recorded Sep 29, 2026501-1,000309 contacts →

Exact match

“With more than 35 years of experience, VITAC, a Verbit company, is a full-service captioning and communications accessibility company, and North America’s largest provider of live…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchGlastonbury, CT, United StatesHQ recorded Sep 29, 2026n/a307 contacts →

Exact match

“Translation Services * Interpreter Services * Medical Interpreter Training * Language Services Interpreters and Translators, Inc.(iTi) is a well-respected and award-winning…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchCharlotte, NC, United StatesHQ recorded Sep 29, 2026n/a301 contacts →

Exact match

“Since 1989, Fluent Language Solutions has helped tens of thousands of clients across the country overcome language barriers with the highest quality interpreting and translating…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchMelbourne, AustraliaHQ recorded Sep 29, 2026n/a276 contacts →

Exact match

“Interpreter & translator services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchVienna, VA, United StatesHQ recorded Sep 29, 2026n/a275 contacts →

Exact match

“Liberty Language Services is a small, woman- and minority-owned language services agency headquartered in Tysons Corner, Virginia.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchAustin, TX, United StatesHQ recorded Sep 29, 20261,001-5,000264 contacts →

Exact match

“ZP is America's leading provider of Video Relay Services (VRS), Video Remote Interpreting (VRI), CART & Captioning Services, and on-site ASL interpreting - born from the union of…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchStockholm, SwedenHQ recorded Sep 29, 202651-200258 contacts →

Exact match

“Tolk- & översättningstjänster Vi hjälper till att kommunicera och överbrygga språkbarriärer - dygnet runt och på över 200 språk och dialekter!”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchGardner, MA, United StatesHQ recorded Sep 29, 2026n/a252 contacts →

Exact match

“Baystate Interpreters, Inc is a Massachusetts based Language Service Provider and a leader in foreign language procurement and provisioning.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 1,913 sign language interpreting companies worldwide

See the full list, filter by size, metro and specialty, and access 6,256 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sign language interpreting companies worldwide at a glance

As of Sep 29, 2026
12.2%Verified-email coverage
26.8Average contacts per company
1-10Median size (employees)
2.6%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
1,173
11-50
441
51-200
190
201-500
51
501-1,000
26
1,001-5,000
12
5,001-10,000
1
10001+
10

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for sign language interpreting companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “sign language interpreting companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 6,256 professional contacts with verified work emails across the full matched dataset. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Sign language interpreting companies by location

7 lists · largest first

Every Sign language interpreting 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “sign language interpreting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sign language interpreting companies are there worldwide?

RevenueBase identified 1,913 company matches for sign language interpreting companies worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Languageline Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most sign language interpreting companies?

The United States leads with 769 companies, followed by the United Kingdom (172) and Brazil (97). Every sign language interpreting companies list by country and city is linked on this page.

Which city has the most sign language interpreting companies?

London leads with 49 company records, followed by Sao Paulo (31) and New York (22).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 6,256 professional contacts with verified work emails tracked across these 1,913 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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 SmartSearch, 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.