Company lists · Data refreshed November 2026

Top 25 Quality audit services worldwide

RevenueBase identified 2,627 company matches for quality audit services worldwide as of November 2026 and tracks 145,301 professional contacts across them, including 36,138 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for quality audit services worldwide, 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 November 5, 2026. Country and city lists for quality audit services follow the table.

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 Nov 5, 2026 How this list was built
2,627Companies
145,301Contacts tracked
36,138Verified emails
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The 25 largest quality audit services worldwide

Ranked by team size
Top 25 of 2,627 company matches for quality audit services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchBaar, SwitzerlandHQ recorded Nov 5, 202610001+65,863 contacts →

Exact match

“SGS is the world’s leading Testing, Inspection and Certification company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchLondon, NY, United KingdomHQ recorded Nov 5, 202610001+24,944 contacts →

Exact match

“Intertek is a leading Total Quality Assurance provider to industries worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchCologne, GermanyHQ recorded Nov 5, 202610001+8,583 contacts →

Exact match

“Neutral, independent third party For more than 150 years, TÜV Rheinland has stood for ensuring quality, safety, and efficiency in conjunction with people, the environment, and…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchNanterre, FranceHQ recorded Nov 5, 202610001+4,012 contacts →

Exact match

“QUALITY ALONG THE SUPPLY CHAIN Founded in 1997, TRIGO Group is a multinational company providing quality solutions for the automotive, aerospace and other transport industries.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchKowloon, NY, Hong KongHQ recorded Nov 5, 202610001+3,981 contacts →

Exact match

“The Bureau Veritas Consumer Products Services division is a world-leading concept-to-consumer quality assurance and compliance services provider to manufacturers, distributors and…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchSant Cugat Del Valles, SpainHQ recorded Nov 5, 20261,001-5,0003,061 contacts →

Exact match

“OCA Global is a private business group –with headquarters in Spain–, dedicated to inspection, quality control, certification, testing, consulting, and training activities.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchFrankfurt, GermanyHQ recorded Nov 5, 20261,001-5,0001,466 contacts →

Exact match

“DQS – Leveraging Quality, Driving Success.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchMadrid, SpainHQ recorded Nov 5, 2026501-1,0001,022 contacts →

Exact match

“AENOR is a global company, that identifies and helps organizations to overcome relevant competitiveness gaps.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchCzęstochowa, PolandHQ recorded Nov 5, 20265,001-10,000778 contacts →

Exact match

“Exact x Forestall is a leading global provider of quality control solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchPinhais, BrazilHQ recorded Nov 5, 2026501-1,000721 contacts →

Exact match

“A Kuhlmann atua na área de supervisão e controle de cargas desde 1989.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchKolkata, IndiaHQ recorded Nov 5, 20261,001-5,000596 contacts →

Exact match

“MSK is a leading Independent Inspection, Testing and Certification Expert, with a global network of offices and laboratories in 28 countries across 5 continents, with headquarters…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchJakarta Selatan, IndonesiaHQ recorded Nov 5, 2026201-500461 contacts →

Exact match

“TÜV NORD Indonesia, member of TÜV NORD GROUP Germany, is one of certification, inspection and testing service providers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchWilmslow, United KingdomHQ recorded Nov 5, 20261,001-5,000322 contacts →

Exact match

“The Citation Group offer unrivalled compliance and quality services to over businesses across the UK, Australia, New Zealand, and Canada.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchSon, NetherlandsHQ recorded Nov 5, 2026201-500316 contacts →

Exact match

“TÜV NORD Nederland is part of the international TÜV NORD Group and has been contributing to the daily success of many companies in the Netherlands and abroad through the provision…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchBuenos Aires, ArgentinaHQ recorded Nov 5, 2026201-500313 contacts →

Exact match

“Lenor es un “Organismo de Evaluación de la Conformidad”, integrado por Organismo de Certificación, Organismo de Inspección, Servicios Industriales, Laboratorios de Ensayos y…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchEssen, GermanyHQ recorded Nov 5, 202610001+299 contacts →

Exact match

“TÜV NORD and its testing, inspection, and certification companies make our world safer and are a driving force for global innovation.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchDammam, Saudi ArabiaHQ recorded Nov 5, 2026501-1,000295 contacts →

Exact match

“RICI Company Ltd.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 5, 20261,001-5,000268 contacts →

Exact match

“Since 1987 HQTS has delivered product inspections, factory audits, testing and quality consulting throughout Asia.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBrussels, BelgiumHQ recorded Nov 5, 2026201-500267 contacts →

Exact match

“The Eurofins Consumer Products Assurance (CPA) network of companies offers comprehensive supply chain assurance to various industries on their quests towards compliance and…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchZollikofen, SwitzerlandHQ recorded Nov 5, 202651-200263 contacts →

Exact match

“The Swiss Association for Quality and Management Systems (SQS) is Switzerland's leading organisation for certification and assessment services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchBerlin, AZ, ItalyHQ recorded Nov 5, 20261,001-5,000243 contacts →

Exact match

“For more than a decade the Tentamus Group has been providing services to customers all over the world.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchBan Chang, ThailandHQ recorded Nov 5, 2026201-500239 contacts →

Exact match

“Dexon is committed to the delivery of quality inspection services and continuous improvement for our customers satisfaction.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchMchenry, IL, United StatesHQ recorded Nov 5, 2026501-1,000219 contacts →

Exact match

“Pro QC International provides tailored quality solutions with a human touch in 100 countries.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchWarrendale, PA, United StatesHQ recorded Nov 5, 202651-200207 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchIstanbul, TürkiyeHQ recorded Nov 5, 20261,001-5,000205 contacts →

Exact match

“TÜV AUSTRIA TURK: Güvenilir Çözüm Ortağınız 1872 yılında temelleri atılan TÜV AUSTRIA Grubu, tarafsız ve bağımsız bir kuruluş olarak kalite kontrol, belgelendirme, test, teknik…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 2,627 quality audit services worldwide

See the full list, filter by size, metro and specialty, and access 36,138 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Quality audit services worldwide at a glance

As of Nov 5, 2026
24.9%Verified-email coverage
55.3Average contacts per company
1-10Median size (employees)
1.2%Largest-city concentration · Sao Paulo
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
1,416
11-50
760
51-200
253
201-500
100
501-1,000
33
1,001-5,000
23
5,001-10,000
6
10001+
22

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for quality audit services are linked below.
What qualifies
Company records worldwide whose business descriptions match “quality audit services” 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. 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 36,138 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 November 5, 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.

Quality audit services by location

16 lists · largest first

Every Quality audit services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “quality audit services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many quality audit services are there worldwide?

RevenueBase identified 2,627 company matches for quality audit services worldwide as of November 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?

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

Which country has the most quality audit services?

The United States leads with 213 companies, followed by India (200) and Brazil (139). Every quality audit services list by country and city is linked on this page.

Which city has the most quality audit services?

Sao Paulo leads with 32 company records, followed by Istanbul (31) and Shenzhen (24).

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 36,138 professional contacts with verified work emails tracked across these 2,627 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 November 5, 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.