Company lists · Data refreshed September 2026
Top 25 Sign language interpreting services based in the United States
RevenueBase identified 478 sign language interpreting services headquartered in the United States as of September 2026 and tracks 26,021 professional contacts across them, including 3,205 with verified work emails. New York is the largest hub.
This list covers sign language interpreting services headquartered in the United States, 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 29, 2026.
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 sign language interpreting services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,440 contacts → | ||||
Partial evidence “LanguageLine Solutions is the world’s leading language solutions company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,096 contacts → | ||||
Partial evidence “Language Access, Driven by Innovation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,863 contacts → | ||||
Partial evidence “Sorenson is a global language services providers, combining assistive technology with human-centric accessibility solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 833 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 623 contacts → | ||||
Partial evidence “We provide on-demand interpreting services via phone and video.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 487 contacts → | ||||
Indirect evidence “How can we help you?” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 475 contacts → | ||||
Partial evidence “Welcome to Ad Astra, a leading global communication solutions and language services brand.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 301 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 275 contacts → | ||||
Partial evidence “Liberty Language Services is a small, woman- and minority-owned language services agency headquartered in Tysons Corner, Virginia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 264 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 249 contacts → | ||||
Partial evidence “Founded in and headquartered in Virginia Beach, Virginia, The Language Group (TLG) is an award-winning language solutions company providing translation and interpretation services…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 206 contacts → | ||||
Partial evidence “Linguava is a full-service provider of spoken and signed languages specializing in Over the Phone Interpretation, Video Remote Interpretation (VRI), Scheduled Video Interpretation…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 153 contacts → | ||||
Partial evidence “We provide Video Relay Service and Virtual Interpreting solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 153 contacts → | ||||
Strong evidence “TIN is a translation and interpreting company that exists to promote communication between and among individuals who speak, write and read different languages.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 149 contacts → | ||||
Partial evidence “Interpreters Unlimited (IU) provides solutions wherever language creates a barrier to effective communication.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 142 contacts → | ||||
Strong evidence “Indianapolis-based LUNA Language Services provides translation and interpreting services for all industries and sectors, public and private.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 125 contacts → | ||||
Strong evidence “We are a full service agency featuring community interpreting & continuing education providing the highest quality sign language interpreters nationwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 107 contacts → | ||||
Partial evidence “Interprenet is a global language service provider committed to connecting the world with a distinct blend of human and tech-forward solutions powered by client-centric…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 102 contacts → | ||||
Partial evidence “We deliver on-site interpreting, telephone interpreting, video interpreting, and document translation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 102 contacts → | ||||
Partial evidence “LATN Language Solutions is a comprehensive language services provider headquartered in Atlanta, Georgia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 101 contacts → | ||||
Partial evidence “A leading provider of scheduled interpretation (onsite, video, and phone) for both spoken languages and ASL.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 100 contacts → | ||||
Partial evidence “Language World is a leading language solutions provider and employer of elite professionals.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 81 contacts → | ||||
Partial evidence “InDemand Interpreting provides a comprehensive suite of leading-edge medical interpreting solutions designed to improve communications between clinicians and a growing population…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 79 contacts → | ||||
Indirect evidence “Cleveland Hearing & Speech Center (CHSC) is the nation’s oldest freestanding speech center, and Northeast Ohio’s only non-profit organization, dedicated solely to serving those…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 76 contacts → | ||||
Indirect evidence “Cross Cultural Communication Systems, is a recognized authority in linguistic cultural services, working with health care, educational, legal and business institutions nationwide…” Source: RevenueBase Database · checked Sep 29, 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: sign language interpreting 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 sign language interpreting services.
- Partial evidence
- Its own public description names part of sign language interpreting services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name sign language interpreting 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 478 sign language interpreting services based in the United States
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Sign language interpreting services based in the United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 478 companies.
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 sign language interpreting 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.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “sign language interpreting 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 sign language interpreting 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 sign language interpreting services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- 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, 3,205 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 29, 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.
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 sign language interpreting 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 sign language interpreting services are there based in the United States?
RevenueBase identified 478 sign language interpreting services headquartered in the United States 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?
Languageline Solutions, headquartered in Monterey, tops this list with the largest team on record.
Which city has the most sign language interpreting services?
New York leads with 15 headquartered companies, followed by Austin (14) and Los Angeles (10).
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 3,205 verified decision-maker contacts tracked across these 478 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 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 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.
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