Company lists · Data refreshed September 2026

Top 25 Sign language interpreter services worldwide

RevenueBase identified 1,249 company matches for sign language interpreter services worldwide as of September 2026 and tracks 37,349 professional contacts across them, including 5,204 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for sign language interpreter services 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 interpreter services 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
1,249Companies
37,349Contacts tracked
5,204Verified emails
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The 25 largest sign language interpreter services worldwide

Ranked by team size
Top 25 of 1,249 company matches for sign language interpreter services 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 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
5Exact 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
6Exact 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
7Exact 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
8Exact 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
9Exact 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
10Exact 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
11Exact 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
12Exact 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
13Exact 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
14Exact 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
15Exact matchToronto, ON, CanadaHQ recorded Sep 29, 2026201-500261 contacts →

Exact match

“For over 80 years, Canadian Hearing Services (CHS) has played a significant role in supporting and meeting the needs of Deaf and hard of hearing Canadians.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchVirginia Beach, VA, United StatesHQ recorded Sep 29, 2026n/a249 contacts →

Exact match

“Founded in and headquartered in Virginia Beach, Virginia, The Language Group (TLG) is an award-winning language solutions company providing translation and interpretation services…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchFayetteville, NC, United StatesHQ recorded Sep 29, 2026501-1,000208 contacts →

Exact match

“About us WorldWide Language Resources is a leading international organization that has provided elite operational combat interpreters and translators to support US, Allied and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchPortland, OR, United StatesHQ recorded Sep 29, 202651-200206 contacts →

Exact match

“Linguava is a full-service provider of spoken and signed languages specializing in Over the Phone Interpretation, Video Remote Interpretation (VRI), Scheduled Video Interpretation…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchLimerick, IrelandHQ recorded Sep 29, 2026n/a185 contacts →

Exact match

“At Translit, we empower people and organisations to overcome the language and communication challenges they face every day.Since 2009, we’ve been dedicated to delivering high…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchAustin, TX, United StatesHQ recorded Sep 29, 2026201-500153 contacts →

Exact match

“We provide Video Relay Service and Virtual Interpreting solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchFort Worth, TX, United StatesHQ recorded Sep 29, 2026n/a153 contacts →

Exact match

“TIN is a translation and interpreting company that exists to promote communication between and among individuals who speak, write and read different languages.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchSan Diego, CA, United StatesHQ recorded Sep 29, 202611-50149 contacts →

Exact match

“Interpreters Unlimited (IU) provides solutions wherever language creates a barrier to effective communication.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchZurich, SwitzerlandHQ recorded Sep 29, 202651-200145 contacts →

Exact match

“Interprefy is the world's leading provider of human and AI-powered solutions and services for events and meetings.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchOslo, NorwayHQ recorded Sep 29, 20261,001-5,000143 contacts →

Exact match

“Signo ble startet i 1898 av Conrad Svendsen, Norges første døveprest.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchIndianapolis, IN, United StatesHQ recorded Sep 29, 202611-50142 contacts →

Exact match

“Indianapolis-based LUNA Language Services provides translation and interpreting services for all industries and sectors, public and private.”

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

Showing 25 of 1,249 sign language interpreter services worldwide

See the full list, filter by size, metro and specialty, and access 5,204 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sign language interpreter services worldwide at a glance

As of Sep 29, 2026
13.9%Verified-email coverage
29.9Average contacts per company
1-10Median size (employees)
2.1%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
770
11-50
297
51-200
117
201-500
37
501-1,000
11
1,001-5,000
6
5,001-10,000
1
10001+
5

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 interpreter services are linked below.
What qualifies
Company records worldwide whose business descriptions match “sign language interpreter services” 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 5,204 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 interpreter services by location

7 lists · largest first

Every Sign language interpreter services 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 interpreter services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sign language interpreter services are there worldwide?

RevenueBase identified 1,249 company matches for sign language interpreter services 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 interpreter services?

The United States leads with 508 companies, followed by the United Kingdom (103) and Brazil (75). Every sign language interpreter services list by country and city is linked on this page.

Which city has the most sign language interpreter services?

London leads with 26 company records, followed by Sao Paulo (21) and Austin (15).

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 5,204 professional contacts with verified work emails tracked across these 1,249 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.