Company lists · Data refreshed September 2026

Top 25 Independent quality auditors based in Türkiye

Name: Independent quality auditors based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 257 companies tracked

RevenueBase identified 257 independent quality auditors headquartered in Türkiye as of September 2026 and tracks 4,082 professional contacts across them, including 819 with verified work emails. Istanbul is the largest hub.

This list covers independent quality auditors headquartered in Türkiye, 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 20, 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 20, 2026 86% judged on-target in blind review

257Companies

4,082Contacts tracked

819Verified emails

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The 25 largest independent quality auditors based in Türkiye

Ranked by team size

Top 25 of 257 independent quality auditors based in Türkiye, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to independent quality auditors: 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	Turk Loydu Conformity Assessment Services Corporation	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	201-500	251 contacts →
	Indirect evidence “Türk Loydu is an “International Classification and Conformity Assessment Body”, providing classification, inspection and certification services, which was established by the…” Source: RevenueBase Database · checked Sep 20, 2026
2	USB Certification	Indirect evidence	İzmir, TürkiyeHQ checked Sep 20, 2026	201-500	220 contacts →
	Indirect evidence “Stop letting compliance risks slow down your global trade.” Source: RevenueBase Database · checked Sep 20, 2026
3	SGS Türkiye	Indirect evidence	TürkiyeHQ checked Sep 20, 2026	5,001-10,000	214 contacts →
	Indirect evidence “Biz SGS’yiz - dünyanın lider gözetim, test ve belgelendirme kuruluşu.” Source: RevenueBase Database · checked Sep 20, 2026
4	TÜV Austria Turk	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	1,001-5,000	184 contacts →
	Indirect evidence “TÜV AUSTRIA TURK: Güvenilir Çözüm Ortağınız 1872 yılında temelleri atılan TÜV AUSTRIA Grubu, tarafsız ve bağımsız bir kuruluş olarak kalite kontrol, belgelendirme, test, teknik…” Source: RevenueBase Database · checked Sep 20, 2026
5	Intertek Turkey-Its C.B	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	201-500	161 contacts →
	Indirect evidence “Firmamız, 1962 yılında Türkiye’de gözetim hizmetlerine başlamıştır ve 1990 yılında ilk laboratuvarını kurmuştur.” Source: RevenueBase Database · checked Sep 20, 2026
6	Kiwa Türkiye	Indirect evidence	Tepeören - Tuzla - İstanbul, TürkiyeHQ checked Sep 20, 2026	10001+	155 contacts →
	Indirect evidence “Kiwa, ilk olarak 1948 yılında Hollanda'da kurulmuş olup, bugün dünya çapında 50'den fazla ülkede faaliyet gösteren, fazla çalışanı bulunan ve 2024 yılı itibarıyla yıllık cirosu…” Source: RevenueBase Database · checked Sep 20, 2026
7	And Uluslararası Denetim VE Gözetim Hizmetleri A.Ş	Indirect evidence	Ataşehir, TürkiyeHQ checked Sep 20, 2026	51-200	118 contacts →
	Indirect evidence “AND, 2004 yılında yurtiçi ve yurtdışında belgelendirme konusunda tecrübeli bir ekip ile yola çıkarak, Türkiye’deki firmalara daha etkin hizmet vermek amacı ile kurulmuştur.” Source: RevenueBase Database · checked Sep 20, 2026
8	Alfanorm Endüstriyel Denetim VE Belgelendirme	Indirect evidence	İstnbul, TürkiyeHQ checked Sep 20, 2026	201-500	98 contacts →
	Indirect evidence “ALFANORM denetim ve belgelendirme sektöründe uzun yıllara dayalı tecrübesi bulunan uzmanlar tarafından kurulmuş bağımsız bir denetim ve belgelendirme firmasıdır.” Source: RevenueBase Database · checked Sep 20, 2026
9	TÜV Nord Turkey	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	51-200	93 contacts →
	Indirect evidence “TÜV NORD Turkey - Inspired by Knowledge TÜV NORD Turkey Teknik Kontrol ve Belgelendirme A.Ş.” Source: RevenueBase Database · checked Sep 20, 2026
10	Udem Belgelendirme A.Ş	Indirect evidence	Ankara, TürkiyeHQ checked Sep 20, 2026	51-200	90 contacts →
	Indirect evidence “UDEM olarak, 20 yılı aşkın tecrübemiz ile kaliteli, tarafsız ve sektöre öncülük eden uygunluk değerlendirme ve test hizmetleri sunmaktayız.” Source: RevenueBase Database · checked Sep 20, 2026
11	Alberk QA Uluslararası Teknik Kontrol VE Belgelendirme A.Ş	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	51-200	88 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
12	Vitsan Gözetim Mümessillik VE Ticaret A.Ş	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	51-200	79 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
13	TSE Global	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	51-200	72 contacts →
	Indirect evidence “TSE Global (INTERNATIONAL CONFORMITY ASSESMENT SERVICE INC.), was founded by joint efforts of Turkish Standards Instutition (TSE) and Ministry of Science, Industry and Technology…” Source: RevenueBase Database · checked Sep 20, 2026
14	Probo Assurance Services	Indirect evidence	Yenimahalle / Ankara, TürkiyeHQ checked Sep 20, 2026	51-200	57 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
15	Teknik Muayene	Indirect evidence	Şişli, TürkiyeHQ checked Sep 20, 2026	51-200	47 contacts →
	Indirect evidence “2008 yılında; bağımsız, tarafsız ve güvenilir bir hizmet anlayışıyla çıktığımız yolda gururla devam ediyoruz.” Source: RevenueBase Database · checked Sep 20, 2026
16	Inspecco	Indirect evidence	Ümraniye, TürkiyeHQ checked Sep 20, 2026	51-200	40 contacts →
	Indirect evidence “INSPECCO is your accredited service provider for international certification, inspection, measurement, and training.” Source: RevenueBase Database · checked Sep 20, 2026
17	Aksis Uluslararası Bağımsız Denetim A.Ş	Indirect evidence	Beykoz, TürkiyeHQ checked Sep 20, 2026	11-50	38 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
18	Incolab Turkey	Indirect evidence	Kocaeli, TürkiyeHQ checked Sep 20, 2026	51-200	37 contacts →
	Indirect evidence “Incolab is an international network of accredited inspection and testing companies, serving clients across the globe.” Source: RevenueBase Database · checked Sep 20, 2026
19	Artıbel Belgelendirme Teknik Kontrol Gözetim VE Eğitim Hiz. Ltd. ŞTI	Indirect evidence	Etimesgut, TürkiyeHQ checked Sep 20, 2026	11-50	35 contacts →
	Indirect evidence “Artıbel'e Hoşgeldiniz 2005 yılında tamamen yerli sermaye ile kurulmuş olan şirketimiz yetkin ve uzman kadrosu ile tarafsız ve bağımsız olarak sunduğu Belgelendirme, Muayene ve…” Source: RevenueBase Database · checked Sep 20, 2026
20	Akin Quality Group INC	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 20, 2026	51-200	30 contacts →
	Indirect evidence “AKIN Kalite Grup A.Ş, merkez ofisi Tuzla istanbul’da olan, ana çalışma alanı Petrol & Gaz, Enerji ve imalat sektörlerinde çalışan firmalara belgelendirme, tahribatlı ve…” Source: RevenueBase Database · checked Sep 20, 2026
21	IFC Global International First Certification	Indirect evidence	İzmi̇r, TürkiyeHQ checked Sep 20, 2026	11-50	30 contacts →
	Indirect evidence “IFC GLOBAL Sertifikasyon Muayene ve Eğitim Hizmetleri Anonim Şirketi uygunluk değerlendirme hizmetleri (Sistem belgelendirme, ürün belgelendirme ve muayene) konusunda hizmet…” Source: RevenueBase Database · checked Sep 20, 2026
22	Denetik Belgelendirme A.Ş	Partial evidence	Istanbul, TürkiyeHQ checked Sep 20, 2026	51-200	23 contacts →
	Partial evidence “Management Systems Certification; ISO 9001 Quality Management System, ISO 14001 Environmental Management System, ISO 45001 OHSAS, ISO Information Technologies Service Management…” Source: RevenueBase Database · checked Sep 20, 2026
23	Ecas Certification International Auditing CO	Partial evidence	Muratpaşa, TürkiyeHQ checked Sep 20, 2026	11-50	22 contacts →
	Partial evidence “ECAS Belgelendirme is an independent,international operating certification body that carries out inspections and issues certificates.” Source: RevenueBase Database · checked Sep 20, 2026
24	Optimal Denge Teknik Denetim A.Ş	Indirect evidence	Kecioren, TürkiyeHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “Optimal Denge Üst Yönetimi ve Kurucu Kadrosu; uzun yıllar boyunca edindikleri yetkinlik ve tecrübeleri yeni bir heyecanla sektöre yansıtmak için Optimal Denge Teknik Denetim A.Ş.” Source: RevenueBase Database · checked Sep 20, 2026
25	TRB Uluslararası Belgelendirme Teknik Kontrol VE Gözetim Hizmetleri Tic. Ltd. ŞTI	Indirect evidence	Ankara, TürkiyeHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Türk Akreditasyon Kurumu (TÜRKAK)’dan 2007 yılı başında akredite olan TRB Uluslararası Belgelendirme Şirketi, uluslararası belgelendirme ve standartlar konusunda geniş bilgi…” Source: RevenueBase Database · checked Sep 20, 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: independent quality auditors. 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 independent quality auditors.
Partial evidence: Its own public description names part of independent quality auditors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name independent quality auditors. 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 257 independent quality auditors based in Türkiye

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Independent quality auditors based in Türkiye at a glance

As of Sep 20, 2026

20.1%Verified-email coverage

15.9Average contacts per company

11-50Median size (employees)

33.9%Largest-city concentration · Istanbul

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

108

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 257 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 independent quality auditors, 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 Türkiye whose own description of what they do matches “independent quality auditors”. 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 independent quality auditors), 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 independent quality auditors, and records with no verified work email. Companies headquartered outside Türkiye 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, 819 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 20, 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.

Independent quality auditors by metro

Independent quality auditors in Istanbul87
Independent quality auditors in Ankara26

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 independent quality auditors, 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 independent quality auditors are there based in Türkiye?

RevenueBase identified 257 independent quality auditors headquartered in Türkiye 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?

Turk Loydu Conformity Assessment Services Corporation, headquartered in Istanbul, tops this list with the largest team on record.

Which city has the most independent quality auditors?

Istanbul leads with 87 headquartered companies, followed by Ankara (26) and Izmir (18).

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 819 verified decision-maker contacts tracked across these 257 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 20, 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.