Company lists · Data refreshed September 2026

Top 22 Internal audit firms based in Türkiye

RevenueBase identified 122 company matches for internal audit firms associated with Türkiye as of September 2026 and tracks 929 professional contacts across them, including 169 with verified work emails. Istanbul is the largest hub.

This list covers company matches for internal audit firms associated with Türkiye, 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 September 20, 2026.

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 Sep 20, 2026 How this list was built
122Companies
929Contacts tracked
169Verified emails
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The 22 largest internal audit firms based in Türkiye

Ranked by team size
Top 22 of 122 company matches for internal audit firms based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchİstanbul, TürkiyeHQ recorded Sep 20, 2026201-500197 contacts →

Exact match

“GÜRELİ YEMİNLİ MALİ MÜŞAVİRLİK VE BAĞIMSIZ DENETİM HİZMETLERİ A.Ş.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchÇankaya, TürkiyeHQ recorded Sep 20, 202651-20055 contacts →

Exact match

“Since 1998, Güncel Group has delivered high-level independent audit, tax assurance, corporate valuation, and strategic consulting to publicly traded corporations, holdings…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchBeykoz, TürkiyeHQ recorded Sep 20, 202611-5038 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchOsmangazi, TürkiyeHQ recorded Sep 20, 202651-20028 contacts →

Exact match

“Bağımsız Denetim Nexia Bursa; Kadrosundaki tecrübeli denetçilerden oluşan denetim ekipleriyle, Sermaye Piyasası Mevzuatına tabi kurum ve kuruluşların, Enerji Piyasasında faaliyet…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchAnkara, TürkiyeHQ recorded Sep 20, 202651-20015 contacts →

Exact match

“Note Office International Independent Audit Consultancy and YMM Inc, established in 2014, is headquartered in Ankara and there are liaison offices in Istanbul, Izmir and Konya…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchBeşiktaş, TürkiyeHQ recorded Sep 20, 202611-5012 contacts →

Exact match

“Kaya & Bekler, üretim ve hizmet sektörleri başta olmak üzere, çeşitli kurumsal sektör işletmelerine bağımsız denetim, vergi danışmanlığı, tam tasdik, muhasebe ve hukuki…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchÇankaya, TürkiyeHQ recorded Sep 20, 202651-20010 contacts →

Exact match

“Today, in addition to fast developments in science and technology, international economic, social, and politics relationships have been living outstanding changes.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchSariyer, TürkiyeHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“Akademik Bağımsız Denetim A.Ş.” 13 Aralık 1994 yılında Bağımsız Denetim, İç Denetim, Muhasebe, Finansal ve Mali Danışmanlık hizmetleri sunmak üzere Ankara’da kurulmuştur.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchİstanbul, TürkiyeHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“Established in 1996, AG Audit has been authorized as an independent audit firm by the Public Oversight Accounting and Auditing Standards Authority.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchIstanbul, TürkiyeHQ recorded Sep 20, 202611-509 contacts →

Exact match

“Kapsam YMM,1995 yılından bu yana tecrübeli uzman kadrosuyla Mali Müşavirlik, İç Denetim, Vergi Denetim, Planlama, Danışmanlığı hizmetleri vermektedir.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchKonak, TürkiyeHQ recorded Sep 20, 202611-508 contacts →

Exact match

“Motto olarak, müşterilerimize mükemmellikle hizmet vermek için tutkulu bir şekilde çalışıyoruz.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchIstanbul, TürkiyeHQ recorded Sep 20, 202611-507 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchİstanbul, TürkiyeHQ recorded Sep 20, 202651-2007 contacts →

Exact match

“İDM İç Denetim Merkezi is a financial services company based out of Fahrettin Kerim Gökay ad:228 / 19, İstanbul, Istanbul, Turkey.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchIzmir Bayraklı, TürkiyeHQ recorded Sep 20, 202611-507 contacts →

Exact match

“Mali̇ye bakanliği spk kgk epdk tarim bakanliği tübi̇tak kosgeb deneti̇mleri̇ ve raporlamalari ifrs ve vuk deneti̇mleri̇ tasdi̇k raporlari bağimsiz deneti̇m raporlamalari”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchAtaşehir, TürkiyeHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Mükellefler, ekonomik ve ticari faaliyetleri süresince karşılaştıkları risk ve beklenmeyen kamusal uyum maliyetlerini optimal ve öngörülebilir tutmak için üst düzey bir vergi…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchBahçelievler, TürkiyeHQ recorded Sep 20, 202611-505 contacts →

Exact match

“ÖKÇÜN YMM 1998 yılından beri profesyonel bir anlayış ile yeminli mali müşavirlik ve bağımsız denetim hizmeti veriyoruz.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchİstanbul, TürkiyeHQ recorded Sep 20, 202611-504 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchİzmir, TürkiyeHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Orient Audit Consulting and YMM AŞ is a Sworn in Certified Public Accountant company founded in accordance with the law 3568.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchSerdivan, TürkiyeHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Finans, üretim ve iletişim alanlarında iç denetim ve yönetim danışmanlığı hizmetleri veren bir şirket”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchIstanbul, TürkiyeHQ recorded Sep 20, 20261-103 contacts →

Exact match

“DENKLEM Sworn-in Certified Public Accounting and AUDIT was established by Serdar TAŞDÖKEN who has worked as a Finance Inspector for a long time in the Ministry of Finance and now…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchİzmi̇r, TürkiyeHQ recorded Sep 20, 20261-103 contacts →

Exact match

“Managed internal controls related services (business process reviews, designs and re-engineering, controls review and implementation, risk assessments) for government institutions…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchİstanbul, TürkiyeHQ recorded Sep 20, 20261-102 contacts →

Exact match

“Neta Denetim; İç Kontrol, Uyum ve Risk Yönetimi alanlarında müşterilerine bilgi ve birikimini aktaran bir danışmanlık firmasıdır.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 22 of 122 internal audit firms based in Türkiye

See the full list, filter by size, metro and specialty, and access 169 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal audit firms based in Türkiye at a glance

As of Sep 20, 2026
18.2%Verified-email coverage
7.6Average contacts per company
11-50Median size (employees)
27.9%Largest-city concentration · Istanbul
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
58
11-50
53
51-200
10
201-500
1

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 122 companies.

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.
What qualifies
Company records associated with Türkiye whose business descriptions match “internal 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 169 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 September 20, 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.

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

How many internal audit firms are there based in Türkiye?

RevenueBase identified 122 company matches for internal audit firms associated with Türkiye as of September 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?

Güreli̇ YMM A.S tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most internal audit firms?

Istanbul leads with 34 company records, followed by Ankara (11) and Cankaya (8).

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 169 professional contacts with verified work emails tracked across these 122 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 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 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.