Company lists · Data refreshed September 2026

Top 25 Internationalization consulting firms based in the United States

RevenueBase identified 3,369 internationalization consulting firms headquartered in the United States as of September 2026 and tracks 47,703 professional contacts across them, including 14,672 with verified work emails. New York is the largest hub.

This list covers internationalization consulting firms 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 28, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
3,369Companies
47,703Contacts tracked
14,672Verified emails
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The 25 largest internationalization consulting firms based in the United States

Ranked by team size
Top 25 of 3,369 internationalization consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to internationalization consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 202610001+13,486 contacts →

Partial evidence

“Korn Ferry is a global consulting firm that powers performance.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceMenlo Park, CA, United StatesHQ checked Sep 28, 20265,001-10,0008,779 contacts →

Partial evidence

“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceHorsham, PA, United StatesHQ checked Sep 28, 2026n/a1,737 contacts →

Indirect evidence

“Established in 1991, LSA’s mission is to help people and companies survive and thrive in a global environment.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceFrisco, TX, United StatesHQ checked Sep 28, 2026501-1,0001,149 contacts →

Partial evidence

“W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceTroy, MI, United StatesHQ checked Sep 28, 2026n/a915 contacts →

Indirect evidence

“Global LT has been a leading expert in Language Solutions and Expatriate Services since 1979.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceRichardson, TX, United StatesHQ checked Sep 28, 2026501-1,000706 contacts →

Indirect evidence

“MobileComm is now fully integrated with UST.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 28, 2026501-1,000661 contacts →

Partial evidence

“Prophet is the Uncommon Growth Company-accelerating impact for business and marketing leaders through consulting, experience, and creative services.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceRosemont, IL, United StatesHQ checked Sep 28, 2026n/a406 contacts →

Indirect evidence

“IOR Global Services is a leading provider of global mobility and talent development solutions designed to advance employee effectiveness across cultures.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceBoston, MA, United StatesHQ checked Sep 28, 2026201-500322 contacts →

Partial evidence

“Drummond Advisors provides global consulting services to companies focusing on accounting, tax, legal and business development.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceMiami, FL, United StatesHQ checked Sep 28, 2026201-500294 contacts →

Partial evidence

“Newlink is a global consulting firm founded in 1998 by Sergio Roitberg, headquartered in Miami with offices in Argentina, Mexico, Peru, Spain, and the Dominican Republic, and a…”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceTampa, FL, United StatesHQ checked Sep 28, 2026201-500293 contacts →

Indirect evidence

“NetExpat is a global leading provider in assessment, training and coaching for mobile employees and their relocating partners with offices in Americas, Europe and Asia.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceRaleigh, NC, United StatesHQ checked Sep 28, 2026201-500244 contacts →

Partial evidence

“ScottMadden is a management consulting firm that does what it takes to get the job done right.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceBoston, MA, United StatesHQ checked Sep 28, 2026501-1,000244 contacts →

Indirect evidence

“Radius was acquired by VISTRA and has been re-branded to VISTRA International Expansion.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidencePeabody, MA, United StatesHQ checked Sep 28, 2026201-500189 contacts →

Indirect evidence

“Tradewin, established in 1997, is a leading provider of import and export advice worldwide.”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceNew York, United StatesHQ checked Sep 28, 2026201-500183 contacts →

Indirect evidence

“Essex delivers transformative business solutions to major global corporations.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceColumbus, OH, United StatesHQ checked Sep 28, 2026201-500172 contacts →

Indirect evidence

“Founded by a former U.S.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceDallas, TX, United StatesHQ checked Sep 28, 2026501-1,000151 contacts →

Partial evidence

“Software Business Solutions Consulting (SBSC) is a boutique, minority-owned and managed, consulting firm, working with global clients to uncover opportunities and solve problems.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceAlexandria, VA, United StatesHQ checked Sep 28, 202651-200140 contacts →

Indirect evidence

“Alconost handles every aspect of localization-from translation and cultural adaptation to continuous multilingual content updates and engineering-allowing you to focus on your top…”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceAlexandria, VA, United StatesHQ checked Sep 28, 2026201-500138 contacts →

Indirect evidence

“International Advisory, Products and Systems Ltd.(i-APS) We empower organizations & communities to be partners for change.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceTampa, FL, United StatesHQ checked Sep 28, 202651-200131 contacts →

Indirect evidence

“HSP Group helps companies manage their international operations and expand globally.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 2026201-500129 contacts →

Indirect evidence

“Ulatus, a Crimson Interactive company, is a trusted brand for professional localization services.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 202651-200128 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 28, 2026201-500125 contacts →

Indirect evidence

“Global Upside, a Safeguard Global company, provides services to simplify business expansion.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceBoston, MA, United StatesHQ checked Sep 28, 202651-200122 contacts →

Partial evidence

“Vantage Partners is a consulting and training firm that helps companies innovate more quickly, execute with greater discipline, and collaborate more effectively, for sustained…”

Source: RevenueBase Database · checked Sep 28, 2026
25Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 2026201-500122 contacts →

Partial evidence

“Tefen is an international management consulting firm, committed to driving organizations towards achieving performance excellence.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 3,369 internationalization consulting firms based in the United States

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Internationalization consulting firms based in the United States at a glance

As of Sep 28, 2026
30.8%Verified-email coverage
14.2Average contacts per company
1-10Median size (employees)
6.4%Largest-city concentration · New York
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
2,406
11-50
724
51-200
166
201-500
44
501-1,000
13
1,001-5,000
10
5,001-10,000
1
10001+
3

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 3,369 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 internationalization consulting firms, 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 “internationalization consulting firms”. 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 internationalization consulting firms), 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 internationalization consulting firms, 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, 14,672 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 28, 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 internationalization consulting firms, 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 internationalization consulting firms are there based in the United States?

RevenueBase identified 3,369 internationalization consulting firms 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?

Korn Ferry, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most internationalization consulting firms?

New York leads with 215 headquartered companies, followed by Miami (164) and Chicago (79).

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 14,672 verified decision-maker contacts tracked across these 3,369 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 28, 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.