Company lists · Data refreshed September 2026

Top 25 Iso certification consulting companies based in the United States

RevenueBase identified 1,128 company matches for iso certification consulting companies associated with the United States as of September 2026 and tracks 24,434 professional contacts across them, including 8,818 with verified work emails. Houston is the largest hub.

This list covers company matches for iso certification consulting 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
1,128Companies
24,434Contacts tracked
8,818Verified emails
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The 25 largest iso certification consulting companies based in the United States

Ranked by team size
Top 25 of 1,128 company matches for iso certification consulting 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 matchNorthbrook, IL, United StatesHQ recorded Sep 20, 202610001+12,316 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchMarietta, GA, United StatesHQ recorded Sep 20, 20261,001-5,000890 contacts →

Exact match

“Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchBoxborough, MA, United StatesHQ recorded Sep 20, 2026501-1,000712 contacts →

Exact match

“TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchIndianapolis, IN, United StatesHQ recorded Sep 20, 2026201-500485 contacts →

Exact match

“We are people-centric Quality, Health, Safety, and Environmental (QHSE) consultants driven to reduce risk, foster sustainable operations, and enhance safety culture to protect…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchAkron, OH, United StatesHQ recorded Sep 20, 2026501-1,000310 contacts →

Exact match

“Founded in 1925 and headquartered in Akron, Ohio, Smithers is a multinational provider of testing, consulting, information, and certification services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchDeer Park, TX, United StatesHQ recorded Sep 20, 2026501-1,000293 contacts →

Exact match

“Please follow Onpoint Industrial Services, LLC for the latest news and updates!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchLouisville, CO, United StatesHQ recorded Sep 20, 2026201-500253 contacts →

Exact match

“Hyde E+C is an international engineering consulting firm that helps companies operate more efficiently, get products to market more quickly, meet regulatory requirements more…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchArlington Heights, IL, United StatesHQ recorded Sep 20, 202610001+241 contacts →

Exact match

“Market Access.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchAnn Arbor, MI, United StatesHQ recorded Sep 20, 2026501-1,000216 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchMelville, NY, United StatesHQ recorded Sep 20, 20261,001-5,000206 contacts →

Exact match

“Certified Group partners with customers to deliver innovative scientific solutions and expertise – So The World Can Trust In What It Consumes®.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchTampa, FL, United StatesHQ recorded Sep 20, 2026201-500174 contacts →

Exact match

“Insight Assurance is a security and compliance firm trusted by more than 1,500 organizations for their SOC 1, SOC 2, SOC 3, PCI DSS, ISO 27001, ISO 27017/27018, ISO 27701, ISO…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchWatertown, MA, United StatesHQ recorded Sep 20, 2026501-1,000120 contacts →

Exact match

“RoyalCert is one of the fastest-growing certification bodies, with an international presence in more than 30 countries that is constantly expanding.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchSouth Plainfield, NJ, United StatesHQ recorded Sep 20, 2026201-500116 contacts →

Exact match

“AEIS, LLC is a testing, inspection, and certification (TIC) agency that increases quality and safety outcomes for major infrastructure.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchLas Vegas, NV, United StatesHQ recorded Sep 20, 20261,001-5,000114 contacts →

Exact match

“Certerra provides technology-enabled testing, inspection, and certification services for new product development, engineering solutions to manage assets, and quality assurance for…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchSellersville, PA, United StatesHQ recorded Sep 20, 202651-200103 contacts →

Exact match

“Companies around the world turn to exida for help and guidance related to functional safety, alarm management, and cybersecurity.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchSanta Cruz, CA, United StatesHQ recorded Sep 20, 202651-20091 contacts →

Exact match

“ISSI is a consulting, auditing and marketing services company, providing services to the world's largest hyperscale cloud platform providers and IT companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchRosedale, MD, United StatesHQ recorded Sep 20, 202651-20088 contacts →

Exact match

“Diversified Safety Services is a third-party safety consulting firm.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchDallas, TX, United StatesHQ recorded Sep 20, 202651-20086 contacts →

Exact match

“At Echo IT Solutions, an NMSDC-certified company with global locations in the US, Canada, South Africa, and India, we're all about simplifying your IT experience.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact 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
20Exact matchHerndon, VA, United StatesHQ recorded Sep 20, 20261,001-5,00084 contacts →

Exact match

“BSI Consulting offers comprehensive world-class solutions in environmental, health, safety (EHS), supply chain security, and sustainability.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchBayonne, NJ, United StatesHQ recorded Sep 20, 2026501-1,00083 contacts →

Exact match

“Total Safety Consulting (TSC) understands the intense planning needed to ensure the safety of your workers and the public-and the cost of not doing it right.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchDayton, OH, United StatesHQ recorded Sep 20, 202611-5080 contacts →

Exact match

“Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact 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
24Exact matchPrinceton, NJ, United StatesHQ recorded Sep 20, 202651-20079 contacts →

Exact match

“STS is a full service IT consulting company headquartered in Princeton, New Jersey serving the communications, life sciences and financial service markets.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact 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

Showing 25 of 1,128 iso certification consulting companies based in the United States

See the full list, filter by size, metro and specialty, and access 8,818 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Iso certification consulting companies based in the United States at a glance

As of Sep 20, 2026
36.1%Verified-email coverage
21.7Average contacts per company
1-10Median size (employees)
5.1%Largest-city concentration · Houston
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
747
11-50
262
51-200
71
201-500
20
501-1,000
11
1,001-5,000
8
5,001-10,000
3
10001+
5

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 1,128 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 “iso certification consulting 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 8,818 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 “iso certification consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 1,128 company matches for iso certification consulting 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?

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

Which city has the most iso certification consulting companies?

Houston leads with 57 company records, followed by New York (18) and Miami (17).

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 8,818 professional contacts with verified work emails tracked across these 1,128 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.