Company lists · Data refreshed September 2026
Top 25 Certification bodies based in the United States
RevenueBase identified 477 certification bodies headquartered in the United States as of September 2026 and tracks 23,244 professional contacts across them, including 8,504 with verified work emails. Miami is the largest hub.
This list covers certification bodies 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 19, 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 certification bodies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,316 contacts → | ||||
Indirect evidence “A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,105 contacts → | ||||
Indirect evidence “Prometric is a global leader in credentialing and skills development.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 712 contacts → | ||||
Partial evidence “TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 667 contacts → | ||||
Partial evidence “Scientific Certification Systems, Inc, now doing business as SCS Global Services, is a trusted leader in third-party environmental, sustainability and food quality certification…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 390 contacts → | ||||
Partial evidence “NSF is the leading global certifier of Global Food Safety Initiative (GFSI) benchmarked certifications.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 308 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 279 contacts → | ||||
Indirect evidence “Accreditation Commission for Health Care (ACHC) is a leader in accreditation and related education, trusted by healthcare organizations internationally.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 200 contacts → | ||||
Indirect evidence “Performance Review Institute® (PRI℠) is headquartered in Pittsburgh, Pennsylvania in the USA, with offices in London, UK to serve Europe and in Beijing, China and Aichi, Japan…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 199 contacts → | ||||
Indirect evidence “The ANSI National Accreditation Board plays an important role in ensuring the safety and quality of goods and services and in protecting the environment.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 156 contacts → | ||||
Indirect evidence “The premier organization independently recognizing excellence in green business industry performance and practice globally.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 142 contacts → | ||||
Indirect evidence “A2LA is a nonprofit, non-governmental, public service, membership society.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 120 contacts → | ||||
Strong evidence “RoyalCert is one of the fastest-growing certification bodies, with an international presence in more than 30 countries that is constantly expanding.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 115 contacts → | ||||
Partial evidence “The National Board for Certified Counselors (NBCC) is a not-for-profit, independent certification organization whose primary purposes are to establish and monitor a national…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 98 contacts → | ||||
Partial evidence “ICC Evaluation Service (ICC-ES) is a certification body that is a subsidiary of the International Code Council and is accredited by the ANSI National National Accreditation Board…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 88 contacts → | ||||
Partial evidence “Holmes Corporation (HC) develops and delivers exceptional educational products to serve individuals worldwide seeking professional credentials and certifications.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 88 contacts → | ||||
Indirect evidence “IAS accredits a wide range of companies and organizations including governmental entities, academia, commercial businesses, and professional associations.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 85 contacts → | ||||
Indirect evidence “INTERCERT is a multinational auditing company headquartered in Texas, United States operating at 28+ countries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 85 contacts → | ||||
Partial evidence “The Global Skill Development Council (GSDC) is a professional certification body offering GSDC accredited certifications that empower individuals, institutions, and enterprises…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 80 contacts → | ||||
Indirect evidence “Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 80 contacts → | ||||
Indirect evidence “Exemplar Global Inc.(formerly RABQSA) is a not-for-profit organization with shared headquarters in both the United States and Australia.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 59 contacts → | ||||
Partial evidence “Amtivo delivers accredited certification services to ISO management system standards, training, and sector-specific schemes, helping organizations demonstrate conformity, meet…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 57 contacts → | ||||
Partial evidence “Core Business Solutions specializes in the needs of small businesses seeking ISO 9001 certification.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 53 contacts → | ||||
Indirect evidence “ASI is a leading farm-to-fork food safety service provider based in St.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 47 contacts → | ||||
Indirect evidence “IS EG Halal is the only entity exclusively authorized by the Government of Egypt to certify Halal exports worldwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 46 contacts → | ||||
Indirect evidence “We certify what matters: Products that are good for people and the planet.” Source: RevenueBase Database · checked Sep 19, 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: certification bodies. 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 certification bodies.
- Partial evidence
- Its own public description names part of certification bodies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name certification bodies. 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 477 certification bodies based in the United States
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Certification bodies based in the United States at a glance
As of Sep 19, 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 477 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 certification bodies, 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 “certification bodies”. 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 certification bodies), 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 certification bodies, 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, 8,504 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 19, 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 certification bodies, 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 certification bodies are there based in the United States?
RevenueBase identified 477 certification bodies 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?
UL Solutions, headquartered in Northbrook, tops this list with the largest team on record.
Which city has the most certification bodies?
Miami leads with 13 headquartered companies, followed by Houston (12) and Washington (9).
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 8,504 verified decision-maker contacts tracked across these 477 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 19, 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.