Company lists · Data refreshed September 2026

Top 25 Professional certification companies based in the United States

RevenueBase identified 273 company matches for professional certification companies associated with the United States as of September 2026 and tracks 6,049 professional contacts across them, including 1,239 with verified work emails. Houston is the largest hub.

This list covers company matches for professional certification companies associated with the United States, 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 20, 2026.

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 20, 2026 How this list was built
273Companies
6,049Contacts tracked
1,239Verified emails
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The 25 largest professional certification companies based in the United States

Ranked by team size
Top 25 of 273 company matches for professional certification companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchWhite Marsh, MD, United StatesHQ recorded Sep 20, 20261,001-5,0002,105 contacts →

Exact match

“Prometric is a global leader in credentialing and skills development.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchOrlando, FL, United StatesHQ recorded Sep 20, 2026201-500308 contacts →

Exact match

“Certus is a leading professional ed-tech training and certification company that, through its suite of brands and businesses, delivers technical-skills training and compliance…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchBethesda, MD, United StatesHQ recorded Sep 20, 2026201-500184 contacts →

Exact match

“There are a multitude of information security certifications, but only GIAC certifications validate the true hands-on skills that go beyond theory and test the pragmatics of…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026n/a156 contacts →

Exact match

“The premier organization independently recognizing excellence in green business industry performance and practice globally.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchEagan, MN, United StatesHQ recorded Sep 20, 202651-20088 contacts →

Exact match

“Holmes Corporation (HC) develops and delivers exceptional educational products to serve individuals worldwide seeking professional credentials and certifications.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchThe Woodlands, TX, United StatesHQ recorded Sep 20, 202651-20085 contacts →

Exact match

“INTERCERT is a multinational auditing company headquartered in Texas, United States operating at 28+ countries.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchWestborough, MA, United StatesHQ recorded Sep 20, 2026501-1,00085 contacts →

Exact match

“The Global Skill Development Council (GSDC) is a professional certification body offering GSDC accredited certifications that empower individuals, institutions, and enterprises…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchMilwaukee, WI, United StatesHQ recorded Sep 20, 202611-5080 contacts →

Exact match

“Exemplar Global Inc.(formerly RABQSA) is a not-for-profit organization with shared headquarters in both the United States and Australia.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchWarrendale, PA, United StatesHQ recorded Sep 20, 202611-5078 contacts →

Exact match

“At PRI Certification℠, we're committed to protecting what matters by delivering industry-leading certification services across Quality, Data Security, Environmental, and Health &…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchNew Braunfels, TX, United StatesHQ recorded Sep 20, 20261,001-5,00056 contacts →

Exact match

“For over 35 years, New Horizons has been empowering individuals and organizations worldwide through end-to-end learning solutions – from IT Training to Business Applications to…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchRapid City, SD, United StatesHQ recorded Sep 20, 202611-5056 contacts →

Exact match

“We help people do leadership better!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchLittle Rock, AR, United StatesHQ recorded Sep 20, 2026n/a56 contacts →

Exact match

“The Certification Institute (CI) develops and administers professional certification programs including Workers' Compensation Risk Management certification for the professional…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchDenver, CO, United StatesHQ recorded Sep 20, 202611-5054 contacts →

Exact match

“FPSB manages, develops and operates certification, education and related programs to benefit the global community by establishing, upholding and promoting worldwide professional…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202651-20049 contacts →

Exact match

“Certification-as-a-Service for an evolving workforce.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchDurham, NC, United StatesHQ recorded Sep 20, 202611-5040 contacts →

Exact match

“Drummond is a leading and trusted compliance, conformance, and standards certification, testing, and validation services provider.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchRockville, MD, United StatesHQ recorded Sep 20, 202651-20040 contacts →

Exact match

“We established Acumen to change how product certifications are performed.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchGreenbelt, MD, United StatesHQ recorded Sep 20, 202611-5033 contacts →

Exact match

“TrainACE is an established and award-winning training organization that provides excellent customer experiences, unbeatable prices, and high-quality training for those who are…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchRichland, WA, United StatesHQ recorded Sep 20, 2026n/a31 contacts →

Exact match

“At Rao Group, we offer a wide range of services through our group companies: Rao Group and Rao Publishing House.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchLexington, KY, United StatesHQ recorded Sep 20, 202611-5030 contacts →

Exact match

“Our Vision is to become the nation's career leading, most relevant medical training institution.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 20, 202651-20027 contacts →

Exact match

“About us: Certification Planner (CP) is the world's leading short and long-term certification and training provider.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchDurham, NC, United StatesHQ recorded Sep 20, 202611-5026 contacts →

Exact match

“Representing high quality and industry-recognized certification companies, worldwide.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchFairfax, VA, United StatesHQ recorded Sep 20, 202611-5025 contacts →

Exact match

“For over 25 years Corsec has assisted companies through the IT security certification process for FIPS 140-2/FIPS 140-3, Common Criteria (CC), CSfC, and the DoD’s APL.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchSalt Lake City, United StatesHQ recorded Sep 20, 202651-20023 contacts →

Exact match

“A GCS Certificadora Brasil é uma empresa do Grupo GCS Certification® que atua no universo das certificações internacionais e possui autonomia para desenvolvimento e atuação em…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchLake Mary, FL, United StatesHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“CEU Institute is a national CE/CLE/CPE services administrator.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchGreensboro, NC, United StatesHQ recorded Sep 20, 202651-20021 contacts →

Exact match

“The Center for Credentialing & Education (CCE®) provides services to organizations, professionals and the public.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 273 professional certification companies based in the United States

See the full list, filter by size, metro and specialty, and access 1,239 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Professional certification companies based in the United States at a glance

As of Sep 20, 2026
20.5%Verified-email coverage
22.2Average contacts per company
11-50Median size (employees)
3.3%Largest-city concentration · Houston
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
115
11-50
91
51-200
44
201-500
11
501-1,000
3
1,001-5,000
6
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 273 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “professional certification 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 1,239 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 20, 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.

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 “professional certification companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many professional certification companies are there based in the United States?

RevenueBase identified 273 company matches for professional certification companies associated with the United States 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?

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

Which city has the most professional certification companies?

Houston leads with 9 company records, followed by New York (9) and Miami (8).

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 1,239 professional contacts with verified work emails tracked across these 273 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 20, 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.