Company lists · Data refreshed September 2026

Top 25 Iso audit consultants worldwide

Name: Iso audit consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 11,784 companies tracked

RevenueBase identified 11,784 iso audit consultants worldwide as of September 2026 and tracks 244,010 professional contacts across them, including 53,814 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers iso audit consultants worldwide, 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 28, 2026. Country and city lists for iso audit consultants follow the table.

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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

11,784Companies

244,010Contacts tracked

53,814Verified emails

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The 25 largest iso audit consultants worldwide

Ranked by team size

Top 25 of 11,784 iso audit consultants worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to iso audit consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SGS	Indirect evidence	Baar, SwitzerlandHQ checked Sep 28, 2026	10001+	60,606 contacts →
	Indirect evidence “SGS is the world’s leading Testing, Inspection and Certification company.” Source: RevenueBase Database · checked Sep 28, 2026
2	Intertek	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	23,155 contacts →
	Indirect evidence “Intertek is a leading Total Quality Assurance provider to industries worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
3	Autonomo	Indirect evidence	Córdoba, SpainHQ checked Sep 28, 2026	n/a	23,018 contacts →
	Indirect evidence “Calidad y Gestión es una empresa consultora de ámbito internacional especializada en servicios de asesoría en las siguientes áreas: Calidad Medio Ambiente Responsabilidad social…” Source: RevenueBase Database · checked Sep 28, 2026
4	DNV	Indirect evidence	Høvik, NorwayHQ checked Sep 28, 2026	10001+	15,983 contacts →
	Indirect evidence “DNV is the independent expert in risk management and assurance, operating in more than 100 countries.” Source: RevenueBase Database · checked Sep 28, 2026
5	TÜV SÜD	Indirect evidence	Munich, GermanyHQ checked Sep 28, 2026	10001+	13,350 contacts →
	Indirect evidence “TÜV SÜD is the trusted partner of choice for safety, security and sustainability solutions.” Source: RevenueBase Database · checked Sep 28, 2026
6	Socotec	Indirect evidence	Guyancourt, FranceHQ checked Sep 28, 2026	10001+	5,715 contacts →
	Indirect evidence “SOCOTEC ranks in the Top 10 Best Workplaces® 2025 (category:>2500 employees) and is once again certified Great Place to Work® in 2025, across 18 countries!” Source: RevenueBase Database · checked Sep 28, 2026
7	DEKRA	Indirect evidence	Stuttgart, GermanyHQ checked Sep 28, 2026	10001+	5,573 contacts →
	Indirect evidence “For more than 100 years, DEKRA has been a trusted name in safety.” Source: RevenueBase Database · checked Sep 28, 2026
8	PT Surveyor Indonesia	Indirect evidence	Jakarta Selatan, IndonesiaHQ checked Sep 28, 2026	5,001-10,000	2,309 contacts →
	Indirect evidence “Surveyor Indonesia didirikan pada tanggal 1 Agustus 1991.” Source: RevenueBase Database · checked Sep 28, 2026
9	ACE	Indirect evidence	CanadaHQ checked Sep 28, 2026	n/a	1,915 contacts →
	Indirect evidence “consulting firm in quality and environmental management system, quality control,quality assurance and lean manufacturing and productivity improvement.” Source: RevenueBase Database · checked Sep 28, 2026
10	MCA Auditoria E Gerenciamento Ltda	Partial evidence	Belo Horizonte, BrazilHQ checked Sep 28, 2026	1,001-5,000	1,754 contacts →
	Partial evidence “MCA Audit and Management Ltd, which specializes in consulting, auditing and project management and construction, is a company created by professionals graduating from leading…” Source: RevenueBase Database · checked Sep 28, 2026
11	Applus Europe	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	1,001-5,000	1,670 contacts →
	Indirect evidence “Applus+ is a worldwide leader in the testing, inspection, and certification sector.” Source: RevenueBase Database · checked Sep 28, 2026
12	Vinçotte	Indirect evidence	Vilvoorde, BelgiumHQ checked Sep 28, 2026	1,001-5,000	1,246 contacts →
	Indirect evidence “Vinçotte (a Kiwa company since May 2022) offers objective and advisory services in inspection, certification, conformity assessment and training.” Source: RevenueBase Database · checked Sep 28, 2026
13	AENOR	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	501-1,000	961 contacts →
	Indirect evidence “AENOR is a global company, that identifies and helps organizations to overcome relevant competitiveness gaps.” Source: RevenueBase Database · checked Sep 28, 2026
14	TÜV Rheinland Asia	Indirect evidence	Cologne, GermanyHQ checked Sep 28, 2026	10001+	956 contacts →
	Indirect evidence “For over 150 years, TÜV Rheinland has helped shape a safer, more trustworthy world.” Source: RevenueBase Database · checked Sep 28, 2026
15	Socotec UK & Ireland	Indirect evidence	Burton Upon Trent, United KingdomHQ checked Sep 28, 2026	1,001-5,000	844 contacts →
	Indirect evidence “SOCOTEC UK is a network of industry-leading experts we empower ambitious businesses at every stage of the asset lifecycle.” Source: RevenueBase Database · checked Sep 28, 2026
16	MTP Métodos Y Tecnología	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	501-1,000	686 contacts →
	Indirect evidence “Consultora especializada en servicios de Aseguramiento de la Calidad del Software dirigidos a controlar y mejorar los costes, plazos y calidad del ciclo de vida de los productos…” Source: RevenueBase Database · checked Sep 28, 2026
17	Kiwa Suomi	Indirect evidence	Helsinki, FinlandHQ checked Sep 28, 2026	10001+	683 contacts →
	Indirect evidence “Kiwa on yksi maailman johtavista asiantuntijoista turvallisuudessa, laadussa ja luotettavuudessa.” Source: RevenueBase Database · checked Sep 28, 2026
18	OES Asset Integrity Management	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 28, 2026	201-500	618 contacts →
	Indirect evidence “At OES we believe in delivering a service that maintain our clients assets, improves efficiency and protects both people and equipment.” Source: RevenueBase Database · checked Sep 28, 2026
19	Mitra SK	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	1,001-5,000	573 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
20	Intedya International Dynamic Advisors	Indirect evidence	Cayes, HaitiHQ checked Sep 28, 2026	201-500	559 contacts →
	Indirect evidence “Intedya is an Global Company specialized in Consulting, Training, Auditing based on International and Local Standards and best practices to manage Quality, Environment, Food…” Source: RevenueBase Database · checked Sep 28, 2026
21	Setsco Services PTE LTD	Indirect evidence	SingaporeHQ checked Sep 28, 2026	501-1,000	557 contacts →
	Indirect evidence “With 40 years of extensive experience, Setsco Services Pte Ltd is one of Singapore’s largest test and inspection companies accredited by the Singapore Accreditation Council –…” Source: RevenueBase Database · checked Sep 28, 2026
22	Boslan Ingeniería Y Consultoría	Indirect evidence	Bilbao, SpainHQ checked Sep 28, 2026	501-1,000	526 contacts →
	Indirect evidence “Boslan, now part of Accenture, is a consolidated and solvent company supported by its numerous references developed for an important portfolio of clients.” Source: RevenueBase Database · checked Sep 28, 2026
23	Mahajan & Aibara	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 2026	201-500	458 contacts →
	Partial evidence “We offer Internal Audit & Risk Consulting related services.” Source: RevenueBase Database · checked Sep 28, 2026
24	Trace Group S.A	Indirect evidence	Neuquén, ArgentinaHQ checked Sep 28, 2026	201-500	457 contacts →
	Indirect evidence “Trace Group, fundada en 2008 como parte del grupo Clusterciar, es una empresa dedicada a la supervisión e inspección técnica para la industria bajo rigurosos estándares de calidad…” Source: RevenueBase Database · checked Sep 28, 2026
25	VCS Quality Services Pvt. LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 28, 2026	201-500	410 contacts →
	Indirect evidence “VCS Quality Services Pvt.” Source: RevenueBase Database · checked Sep 28, 2026

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: iso audit consultants. 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 iso audit consultants.
Partial evidence: Its own public description names part of iso audit consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name iso audit consultants. 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 11,784 iso audit consultants worldwide

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Iso audit consultants worldwide at a glance

As of Sep 28, 2026

22.1%Verified-email coverage

20.7Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

8,043

11-50

2,801

51-200

604

201-500

183

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among iso audit consultants, 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.
Coverage: Every country. Country and city lists for iso audit consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “iso audit consultants”. 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 iso audit consultants), 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 iso audit consultants, and records with no verified work email.
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, 53,814 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 28, 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.

Iso audit consultants by location

57 lists · largest first

Every Iso audit consultants 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 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 iso audit consultants, 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 iso audit consultants are there worldwide?

RevenueBase identified 11,784 iso audit consultants worldwide 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?

SGS, headquartered in Baar, tops this list with the largest team on record.

Which country has the most iso audit consultants?

Brazil leads with 906 companies, followed by India (815) and the United States (653). Every iso audit consultants list by country and city is linked on this page.

Which city has the most iso audit consultants?

Sao Paulo leads with 173 headquartered companies, followed by Lima (159) and Dubai (109).

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 53,814 verified decision-maker contacts tracked across these 11,784 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 28, 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.