Company lists · Data refreshed November 2026

Top 25 Quality audit firms worldwide

Name: Quality audit firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 6,971 companies tracked

RevenueBase identified 6,971 company matches for quality audit firms worldwide as of November 2026 and tracks 305,917 professional contacts across them, including 82,135 with verified work emails. India is the largest market and Istanbul the largest hub.

This list covers company matches for quality audit firms 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 6, 2026. Country and city lists for quality audit firms 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 6, 2026 How this list was built

6,971Companies

305,917Contacts tracked

82,135Verified emails

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The 25 largest quality audit firms worldwide

Ranked by team size

Top 25 of 6,971 company matches for quality audit firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	SGS	Exact match	Baar, SwitzerlandHQ recorded Nov 6, 2026	10001+	65,863 contacts →
	Exact match “SGS is the world’s leading Testing, Inspection and Certification company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Bureau Veritas	Exact match	Paris, United KingdomHQ recorded Nov 6, 2026	10001+	50,489 contacts →
	Exact match “Bureau Veritas is a world leader in Testing, Inspection and Certification.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Intertek	Exact match	London, NY, United KingdomHQ recorded Nov 6, 2026	10001+	24,944 contacts →
	Exact match “Intertek is a leading Total Quality Assurance provider to industries worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	DNV	Exact match	Høvik, NorwayHQ recorded Nov 6, 2026	10001+	16,914 contacts →
	Exact match “DNV is the independent expert in risk management and assurance, operating in more than 100 countries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	TÜV SÜD	Exact match	Munich, GermanyHQ recorded Nov 6, 2026	10001+	14,378 contacts →
	Exact match “TÜV SÜD is the trusted partner of choice for safety, security and sustainability solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	TÜV Rheinland Group	Exact match	Cologne, GermanyHQ recorded Nov 6, 2026	10001+	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 6, 2026 · View company records in RevenueBase
7	APAVE	Exact match	Courbevoie Cedex, FranceHQ recorded Nov 6, 2026	10001+	7,511 contacts →
	Exact match “Le Groupe Apave est spécialisé dans la maîtrise des risques techniques, humains, environnementaux et numériques.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	TRIGO	Exact match	Nanterre, FranceHQ recorded Nov 6, 2026	10001+	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 6, 2026 · View company records in RevenueBase
9	OCA Global	Exact match	Sant Cugat Del Valles, SpainHQ recorded Nov 6, 2026	1,001-5,000	3,061 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 6, 2026 · View company records in RevenueBase
10	Formel D Group	Exact match	Cologne, GermanyHQ recorded Nov 6, 2026	10001+	3,044 contacts →
	Exact match “Formel D is a global service provider for testing, inspection & certification.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	TUV India Pvt. LTD	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	1,001-5,000	2,377 contacts →
	Exact match “TUV India Pvt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	ACE	Exact match	CanadaHQ recorded Nov 6, 2026	n/a	1,989 contacts →
	Exact match “consulting firm in quality and environmental management system, quality control,quality assurance and lean manufacturing and productivity improvement.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Applus Europe	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	1,759 contacts →
	Exact match “Applus+ is a worldwide leader in the testing, inspection, and certification sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	QIMA	Exact match	Hong KongHQ recorded Nov 6, 2026	5,001-10,000	1,729 contacts →
	Exact match “At QIMA, we are on a mission to help our clients make products consumers can trust.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Stratosphere Quality	Exact match	Fishers, IN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,663 contacts →
	Exact match “Stratosphere Quality, founded in 2009, is a major global provider of quality assurance and outsourcing solutions, such as sorting and inspection services, to manufacturers of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	DQS	Exact match	Frankfurt, GermanyHQ recorded Nov 6, 2026	1,001-5,000	1,466 contacts →
	Exact match “DQS – Leveraging Quality, Driving Success.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Vinçotte	Exact match	Vilvoorde, BelgiumHQ recorded Nov 6, 2026	1,001-5,000	1,314 contacts →
	Exact match “Vinçotte (a Kiwa company since May 2022) offers objective and advisory services in inspection, certification, conformity assessment and training.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	AENOR	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	501-1,000	1,022 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 6, 2026 · View company records in RevenueBase
19	Socotec UK & Ireland	Exact match	Burton Upon Trent, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	933 contacts →
	Exact match “SOCOTEC UK is a network of industry-leading experts we empower ambitious businesses at every stage of the asset lifecycle.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	British Engineering Services Group	Exact match	Warrington, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	787 contacts →
	Exact match “Testing, inspection, certification and compliance is our core business so that’s what gets 100% of our focus.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Exact X Forestall Group	Exact match	Częstochowa, PolandHQ recorded Nov 6, 2026	5,001-10,000	778 contacts →
	Exact match “Exact x Forestall is a leading global provider of quality control solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Equinox Labs	Exact match	Navi Mumbai, IndiaHQ recorded Nov 6, 2026	1,001-5,000	774 contacts →
	Exact match “We are committed to strengthening safety systems with the most reliable Testing and Auditing Solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Kuhlmann Tecnologia & Monitoramento Agrícola	Exact match	Pinhais, BrazilHQ recorded Nov 6, 2026	501-1,000	721 contacts →
	Exact match “A Kuhlmann atua na área de supervisão e controle de cargas desde 1989.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	SCS Global Services	Exact match	Emeryville, CA, United StatesHQ recorded Nov 6, 2026	201-500	705 contacts →
	Exact match “Scientific Certification Systems, Inc, now doing business as SCS Global Services, is a trusted leader in third-party environmental, sustainability and food quality certification…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Kiwa Suomi	Exact match	Helsinki, FinlandHQ recorded Nov 6, 2026	10001+	692 contacts →
	Exact match “Kiwa on yksi maailman johtavista asiantuntijoista turvallisuudessa, laadussa ja luotettavuudessa.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “quality audit firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 6,971 quality audit firms worldwide

See the full list, filter by size, metro and specialty, and access 82,135 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Quality audit firms worldwide at a glance

As of Nov 6, 2026

26.8%Verified-email coverage

43.9Average contacts per company

1-10Median size (employees)

1.0%Largest-city concentration · Istanbul

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

3,854

11-50

2,024

51-200

637

201-500

220

501-1,000

1,001-5,000

5,001-10,000

10001+

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 firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “quality audit firms” 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 82,135 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 6, 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 firms by location

41 lists · largest first

Every Quality audit firms 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 firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many quality audit firms are there worldwide?

RevenueBase identified 6,971 company matches for quality audit firms 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 firms?

India leads with 526 companies, followed by the United States (475) and Brazil (411). Every quality audit firms list by country and city is linked on this page.

Which city has the most quality audit firms?

Istanbul leads with 72 company records, followed by Sao Paulo (69) and Dubai (67).

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 82,135 professional contacts with verified work emails tracked across these 6,971 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 6, 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.