Company lists · Data refreshed September 2026

Top 25 Quality system consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 23,091 companies tracked

RevenueBase identified 23,091 quality system consulting firms worldwide as of September 2026 and tracks 252,334 professional contacts across them, including 44,977 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers quality system consulting firms 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 29, 2026. Country and city lists for quality system consulting firms 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 29, 2026 86% judged on-target in blind review

23,091Companies

252,334Contacts tracked

44,977Verified emails

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The 25 largest quality system consulting firms worldwide

Ranked by team size

Top 25 of 23,091 quality system consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to quality system consulting firms: 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	Intertek	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	10001+	23,155 contacts →
	Partial evidence “Intertek is a leading Total Quality Assurance provider to industries worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
2	Autonomo	Indirect evidence	Córdoba, SpainHQ checked Sep 29, 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 29, 2026
3	TÜV Rheinland Group	Partial evidence	Cologne, GermanyHQ checked Sep 29, 2026	10001+	7,928 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
4	Bureau Veritas Consumer Products Services	Partial evidence	Kowloon, Hong KongHQ checked Sep 29, 2026	10001+	3,802 contacts →
	Partial evidence “The Bureau Veritas Consumer Products Services division is a world-leading concept-to-consumer quality assurance and compliance services provider to manufacturers, distributors and…” Source: RevenueBase Database · checked Sep 29, 2026
5	TRIGO	Partial evidence	Nanterre, FranceHQ checked Sep 29, 2026	10001+	3,572 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026
6	Formel D Group	Indirect evidence	Köln, GermanyHQ checked Sep 29, 2026	10001+	2,758 contacts →
	Indirect evidence “Formel D is a global service provider for testing, inspection & certification.” Source: RevenueBase Database · checked Sep 29, 2026
7	TUV India Pvt. LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	2,277 contacts →
	Indirect evidence “TUV India Pvt.” Source: RevenueBase Database · checked Sep 29, 2026
8	ACE	Strong evidence	CanadaHQ checked Sep 29, 2026	n/a	1,915 contacts →
	Strong evidence “consulting firm in quality and environmental management system, quality control,quality assurance and lean manufacturing and productivity improvement.” Source: RevenueBase Database · checked Sep 29, 2026
9	MCA Auditoria E Gerenciamento Ltda	Partial evidence	Belo Horizonte, BrazilHQ checked Sep 29, 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 29, 2026
10	Planit	Partial evidence	Sydney, AustraliaHQ checked Sep 29, 2026	1,001-5,000	1,612 contacts →
	Partial evidence “At Planit, we provide businesses with the vision, precision and independence they need to improve the quality of their software and the way they deliver it.” Source: RevenueBase Database · checked Sep 29, 2026
11	DQS	Partial evidence	Frankfurt Am Main, GermanyHQ checked Sep 29, 2026	1,001-5,000	1,424 contacts →
	Partial evidence “DQS – Leveraging Quality, Driving Success.” Source: RevenueBase Database · checked Sep 29, 2026
12	PQE Group	Strong evidence	Reggello, JapanHQ checked Sep 29, 2026	1,001-5,000	1,309 contacts →
	Strong evidence “WHO WE ARE PQE Group is a women-owned, ISO 9001 certified technology solutions and compliance consulting Services Company, offering complete quality solutions for GCP, GLP, GMP…” Source: RevenueBase Database · checked Sep 29, 2026
13	RGBSI	Partial evidence	Troy, MI, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,040 contacts →
	Partial evidence “At RGBSI, we deliver engineering and quality solutions that close the gap between strategy and execution for global organizations of all sizes.” Source: RevenueBase Database · checked Sep 29, 2026
14	Paragon	Partial evidence	Cranford, NJ, United StatesHQ checked Sep 29, 2026	501-1,000	936 contacts →
	Partial evidence “Paragon is a now part of CGI (cgi.com), a global IT and business consulting services firm.” Source: RevenueBase Database · checked Sep 29, 2026
15	Falcão Bauer	Partial evidence	Sao Paulo, BrazilHQ checked Sep 29, 2026	1,001-5,000	899 contacts →
	Partial evidence “Desde 1953 as empresas do Grupo Falcão Bauer prestam serviços nas áreas de Engenharia Consultiva realizando serviços de assessoria, avaliação, inspeção, Certificações (produtos e…” Source: RevenueBase Database · checked Sep 29, 2026
16	CAI	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 29, 2026	501-1,000	763 contacts →
	Indirect evidence “At CAI, we are a professional services firm designed to accelerate operational readiness and excellence in critical environments.” Source: RevenueBase Database · checked Sep 29, 2026
17	Exact X Forestall Group	Partial evidence	Częstochowa, PolandHQ checked Sep 29, 2026	5,001-10,000	711 contacts →
	Partial evidence “Exact x Forestall is a leading global provider of quality control solutions.” Source: RevenueBase Database · checked Sep 29, 2026
18	MTP Métodos Y Tecnología	Indirect evidence	Madrid, SpainHQ checked Sep 29, 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 29, 2026
19	Kiwa Suomi	Indirect evidence	Helsinki, FinlandHQ checked Sep 29, 2026	10001+	683 contacts →
	Indirect evidence “Kiwa on yksi maailman johtavista asiantuntijoista turvallisuudessa, laadussa ja luotettavuudessa.” Source: RevenueBase Database · checked Sep 29, 2026
20	Bureau Veritas Primary Integration	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 29, 2026	201-500	651 contacts →
	Indirect evidence “Founded in 2005, the vision behind Primary Integration (PI) was to build the most elite mission critical commissioning/data center commissioning and operational risk management…” Source: RevenueBase Database · checked Sep 29, 2026
21	Parente Andrade	Partial evidence	Manaus, BrazilHQ checked Sep 29, 2026	1,001-5,000	588 contacts →
	Partial evidence “Somos uma organização que executa serviços dentro do mais alto padrão de qualidade, segurança e respeito ao meio ambiente, visando promover a satisfação dos clientes nos serviços…” Source: RevenueBase Database · checked Sep 29, 2026
22	Endrix	Partial evidence	Lyon, FranceHQ checked Sep 29, 2026	501-1,000	576 contacts →
	Partial evidence “Le Groupe SFC, c’est - Une équipe de 200 collaborateurs accompagnant au quotidien plus de clients - Une politique orientée qualité et satisfaction clients avec notre certification…” Source: RevenueBase Database · checked Sep 29, 2026
23	Intedya International Dynamic Advisors	Strong evidence	Cayes, HaitiHQ checked Sep 29, 2026	201-500	559 contacts →
	Strong 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 29, 2026
24	Boslan Ingeniería Y Consultoría	Indirect evidence	Bilbao, SpainHQ checked Sep 29, 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 29, 2026
25	Service Engenharia	Indirect evidence	Salvador, BrazilHQ checked Sep 29, 2026	1,001-5,000	519 contacts →
	Indirect evidence “A SERVICE Engenharia é uma empresa de prestação de serviços de Consultoria, Planejamento, Administração, Fiscalização, Manutenção, Construção e Montagem Industrial, atuando em…” Source: RevenueBase Database · checked Sep 29, 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: quality system consulting firms. 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 quality system consulting firms.
Partial evidence: Its own public description names part of quality system consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name quality system consulting firms. 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 23,091 quality system consulting firms worldwide

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Quality system consulting firms worldwide at a glance

As of Sep 29, 2026

17.8%Verified-email coverage

10.9Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

16,288

11-50

5,076

51-200

1,111

201-500

318

501-1,000

115

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 quality system consulting firms, 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 quality system consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “quality system consulting firms”. 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 quality system consulting firms), 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 quality system consulting firms, 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, 44,977 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 29, 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.

Quality system consulting firms by location

88 lists · largest first

Every Quality system consulting 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 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 quality system consulting firms, 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 quality system consulting firms are there worldwide?

RevenueBase identified 23,091 quality system consulting firms 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?

Intertek, headquartered in London, tops this list with the largest team on record.

Which country has the most quality system consulting firms?

The United States leads with 2,362 companies, followed by Brazil (1,887) and India (1,203). Every quality system consulting firms list by country and city is linked on this page.

Which city has the most quality system consulting firms?

Sao Paulo leads with 348 headquartered companies, followed by Lima (257) and London (162).

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 44,977 verified decision-maker contacts tracked across these 23,091 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 29, 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.