Company lists · Data refreshed September 2026

Top 25 Iso audit consulting firms based in Switzerland

Name: Iso audit consulting firms based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 199 companies tracked

RevenueBase identified 199 iso audit consulting firms headquartered in Switzerland as of September 2026 and tracks 61,706 professional contacts across them, including 16,619 with verified work emails. Zurich is the largest hub.

This list covers iso audit consulting firms headquartered in Switzerland, 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.

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

199Companies

61,706Contacts tracked

16,619Verified emails

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The 25 largest iso audit consulting firms based in Switzerland

Ranked by team size

Top 25 of 199 iso audit consulting firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to iso audit 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	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	SQS	Indirect evidence	Zollikofen, SwitzerlandHQ checked Sep 28, 2026	51-200	251 contacts →
	Indirect evidence “The Swiss Association for Quality and Management Systems (SQS) is Switzerland's leading organisation for certification and assessment services.” Source: RevenueBase Database · checked Sep 28, 2026
3	Mtic Group	Indirect evidence	Paradiso, SwitzerlandHQ checked Sep 28, 2026	201-500	39 contacts →
	Indirect evidence “MTIC Group: Your Partner in Testing, Inspection, Certification, and Training Excellence MTIC Group is a trusted global leader in Testing, Inspection, Certification of Management…” Source: RevenueBase Database · checked Sep 28, 2026
4	Swiss Infosec AG	Indirect evidence	Sursee, SwitzerlandHQ checked Sep 28, 2026	51-200	36 contacts →
	Indirect evidence “Seit 1989 befassen wir uns professionell mit allem rund um die Sicherheit von Informationen.” Source: RevenueBase Database · checked Sep 28, 2026
5	Marenco AG Design Engineering Prototyping Consulting	Indirect evidence	Pfaeffikon / Zurich, SwitzerlandHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “Marenco AG was founded in 1997.” Source: RevenueBase Database · checked Sep 28, 2026
6	Inova Consulting	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “Inova Consulting - Your premier Swiss consulting partner, specializing in the Life Sciences industry.” Source: RevenueBase Database · checked Sep 28, 2026
7	Caminada Zurich	Partial evidence	Stadtkreis 8 Riesbach, SwitzerlandHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “We have been acknowledged as an independent, flexible and trustworthy consulting firm since 1946.” Source: RevenueBase Database · checked Sep 28, 2026
8	Machcon Gmbh	Indirect evidence	Zug, SwitzerlandHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “machCon ist Ihre spezialisierte Unternehmensberatung für Datenschutz, IT-Sicherheit und Compliance.” Source: RevenueBase Database · checked Sep 28, 2026
9	Optimiso Group SA	Partial evidence	Versoix \| Genève, SwitzerlandHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “Optimiso (by Iskera) apporte des solutions pour tous les projets liés au contrôle interne, aux certifications ISO, à l'organisation interne ou management des risques.” Source: RevenueBase Database · checked Sep 28, 2026
10	Labor Veritas AG	Partial evidence	Zurich, SwitzerlandHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Labor Veritas bietet chemische und mikrobiologische Dienstleistungsanalytik sowie Beratungsdienstleistungen (Durchführung von Audits, Unterstützung beim Aufbau und der…” Source: RevenueBase Database · checked Sep 28, 2026
11	Iqc-Group AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Helping Medical Device and Life Sciences achieve efficient GxP compliance” Source: RevenueBase Database · checked Sep 28, 2026
12	Axxos AG	Partial evidence	Rombach, SwitzerlandHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Your Partner for Quality Management in the Medical Device Industry We are convinced that the key to success in offering tailor-made consulting solutions lies in the business…” Source: RevenueBase Database · checked Sep 28, 2026
13	Ostschweizerische Treuhand Zürich AG	Partial evidence	Stadtkreis 3 Wiedikon, SwitzerlandHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Ostschweizerische Treuhand Zürich AG, short OTG, has been in business since 1918 as an accredited audit firm conducting full and limited audits.” Source: RevenueBase Database · checked Sep 28, 2026
14	PKF Certifica SA	Indirect evidence	Lugano, SwitzerlandHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “PKF Certifica SA is an auditing and corporate consultancy company that is a full member of the PKF global network, counting over 200 member firms in around 150 countries across…” Source: RevenueBase Database · checked Sep 28, 2026
15	Baxian AG	Indirect evidence	Kuesnacht, SwitzerlandHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “BaXian AG, headquartered in Küsnacht at Lake Zurich is an international, dynamically growing management consultancy which is specialized in IT Security, Data Analytics, Risk…” Source: RevenueBase Database · checked Sep 28, 2026
16	Bprex Group AG	Partial evidence	Winterthur, SwitzerlandHQ checked Sep 28, 2026	1-10	10 contacts →
	Partial evidence “Die bprex group ag erbringt professionelle Dienstleistungen hinsichtlich Durchführung von Messungen, Inspektionen, Tests, Audits und Beratungen in sämtlichen Bereichen der…” Source: RevenueBase Database · checked Sep 28, 2026
17	Q-Linked AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “Wir sind überzeugt, Ihnen mit unserem modernen Verständnis in den Bereichen Qualität sowie Umwelt ein praxisorientiertes Managementsystem anbieten zu können.” Source: RevenueBase Database · checked Sep 28, 2026
18	Pluriaudit SA	Indirect evidence	Lugano, SwitzerlandHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
19	Ecobion	Indirect evidence	Carouge, SwitzerlandHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Ecobion vous accompagne tout au long de votre démarche d'assurance qualité.” Source: RevenueBase Database · checked Sep 28, 2026
20	Lufida Revisions AG	Indirect evidence	Luzern, SwitzerlandHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Die Lufida-Revision stellt Unternehmen aus allen Branchen ihre Dienstleistungen als unabhängiges und flexibles Wirtschaftsprüfungs- und Beratungsunternehmen zur Verfügung.” Source: RevenueBase Database · checked Sep 28, 2026
21	Perenne Sàrl	Indirect evidence	St-cierges, SwitzerlandHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Nous vous accompagnons dans différents domaines de votre entreprise - Sécurité au Travail et Protection de la Santé - Personne de Confiance (PCE) et Service Social en Entreprise…” Source: RevenueBase Database · checked Sep 28, 2026
22	Actagis	Indirect evidence	Paudex, SwitzerlandHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “Convergence and efficiency of your IT & Security Governance and business continuity (BC) are key for the survival of your enterprise in today’s competitive landscape.” Source: RevenueBase Database · checked Sep 28, 2026
23	HLS & Partner SA	Strong evidence	Vevey, SwitzerlandHQ checked Sep 28, 2026	1-10	6 contacts →
	Strong evidence “HLS & Partner is an Audit and Consulting firm which offers a wide range of financial services.” Source: RevenueBase Database · checked Sep 28, 2026
24	Jaksch Lifescience Consulting Gmbh	Strong evidence	Aarburg, SwitzerlandHQ checked Sep 28, 2026	11-50	6 contacts →
	Strong evidence “The JAKSCH LIFESCIENCE CONSULTING is your ISO 13485-certified consultant of choice for project management and interim management.” Source: RevenueBase Database · checked Sep 28, 2026
25	Asma Asset Management Audit & Compliance SA	Partial evidence	Genève, SwitzerlandHQ checked Sep 28, 2026	11-50	5 contacts →
	Partial evidence “ASMA Asset Management Audit & Compliance supports clients of all kinds – from the smallest financial intermediary to listed groups.” 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 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 iso audit consulting firms.
Partial evidence: Its own public description names part of iso audit consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name iso audit 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 199 iso audit consulting firms based in Switzerland

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Iso audit consulting firms based in Switzerland at a glance

As of Sep 28, 2026

26.9%Verified-email coverage

310.1Average contacts per company

1-10Median size (employees)

7.5%Largest-city concentration · Zurich

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

150

11-50

51-200

201-500

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 199 companies.

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 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.
What qualifies: Companies headquartered in Switzerland whose own description of what they do matches “iso audit 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 iso audit 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 iso audit consulting firms, and records with no verified work email. Companies headquartered outside Switzerland are excluded even when they keep an office there.
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, 16,619 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.

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 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 iso audit consulting firms are there based in Switzerland?

RevenueBase identified 199 iso audit consulting firms headquartered in Switzerland 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 city has the most iso audit consulting firms?

Zurich leads with 15 headquartered companies, followed by Lugano (8) and Chiasso (6).

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 16,619 verified decision-maker contacts tracked across these 199 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.