Company lists · Data refreshed September 2026

Top 25 IT audit consulting companies based in Türkiye

RevenueBase identified 146 company matches for IT audit consulting companies associated with Türkiye as of September 2026 and tracks 1,175 professional contacts across them, including 175 with verified work emails. Istanbul is the largest hub.

This list covers company matches for IT audit consulting companies 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 28, 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 28, 2026 How this list was built
146Companies
1,175Contacts tracked
175Verified emails
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The 25 largest IT audit consulting companies based in Türkiye

Ranked by team size
Top 25 of 146 company matches for IT audit consulting companies based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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 28, 202651-20081 contacts →

Exact match

“AS/Nexia Turkey is a professional auditing and consultancy company serving the leading firms in Turkey by giving independent auditing, financial advisory,full…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchÇankaya, TürkiyeHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
3Exact matchİstanbul, TürkiyeHQ recorded Sep 28, 202611-5042 contacts →

Exact match

“Company Profile Lostar Inc, founded in 1998, based in Istanbul/Turkey, provides competitive edge in an uncertain world with Business and Technology Risk Consulting.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchBeykoz, TürkiyeHQ recorded Sep 28, 202611-5038 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchOsmangazi, TürkiyeHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
6Exact matchİstanbul, TürkiyeHQ recorded Sep 28, 202611-5015 contacts →

Exact match

“Optimum Denetim 2011 yılında kurulmuştur.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchSisli, TürkiyeHQ recorded Sep 28, 202651-20014 contacts →

Exact match

“Consulta Grubu, hizmet alanlarına göre kurumsal yapılanmasını oluşturmuş beş şirketten oluşmaktadır.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchİstanbul, TürkiyeHQ recorded Sep 28, 202611-5014 contacts →

Exact match

“DENETIM TURKEY, which has been established for the purposes of the development of the knowledge and application of modern business administration in the areas of Tax, Accounting…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchİçerenköy, TürkiyeHQ recorded Sep 28, 202611-5014 contacts →

Exact match

“We are a medium-sized auditing, accounting and consultancy firm.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchBeşiktaş, TürkiyeHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
11Exact matchİstanbul, TürkiyeHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
12Exact matchAnkara, TürkiyeHQ recorded Sep 28, 202651-2009 contacts →

Exact match

“Founded in 2004, Dmf System International Independent Auditing, Consulting & Certified Public Accounting Co.(“DMF”) is an independent auditing, consultancy and Certified Public…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchKonak, TürkiyeHQ recorded Sep 28, 202611-508 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchIstanbul, TürkiyeHQ recorded Sep 28, 202611-507 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchAnkara, TürkiyeHQ recorded Sep 28, 20261-107 contacts →

Exact match

“Tax / Accounting / Consultancy”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchİstanbul, TürkiyeHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
17Exact matchIstanbul, TürkiyeHQ recorded Sep 28, 202611-507 contacts →

Exact match

“Tenet, yerel ve uluslararası tüm müşterilerinin ihtiyaçlarına cevap vermek adına denetim ve danışmanlık anlayışını genişleterek, firmaya ve endüstriye özel hizmetler sağlayan…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchAtaşehir, TürkiyeHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
19Exact matchBuyukcekmece, TürkiyeHQ recorded Sep 28, 202611-506 contacts →

Exact match

“Vergi Denetimi Denetim Finansal Danışmanlık Finansal Hizmetler”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchBahçelievler, TürkiyeHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
21Exact matchSeyhan, TürkiyeHQ recorded Sep 28, 20261-105 contacts →

Exact match

“Vergi denetim ve danışmanlık hizmeti vermekteyim.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchİstanbul, TürkiyeHQ recorded Sep 28, 202611-504 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchIstanbul, TürkiyeHQ recorded Sep 28, 20261-104 contacts →

Exact match

“Deriner & Partners Müşterilerine denetim, danışmanlık ve outsourcing hizmetleri sunmaktadır.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchSerdivan, TürkiyeHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
25Exact matchIstanbul, TürkiyeHQ recorded Sep 28, 20261-103 contacts →

Exact match

“G&G is an organization located in Turkey and Hungary, who is aiming to support the organizations and individuals to conduct their businesses on efficient and secure platforms.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 146 IT audit consulting companies based in Türkiye

See the full list, filter by size, metro and specialty, and access 175 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT audit consulting companies based in Türkiye at a glance

As of Sep 28, 2026
14.9%Verified-email coverage
8.0Average contacts per company
1-10Median size (employees)
32.2%Largest-city concentration · Istanbul
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
73
11-50
62
51-200
11

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 146 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 “IT audit consulting companies” 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 175 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 28, 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 “IT audit consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT audit consulting companies are there based in Türkiye?

RevenueBase identified 146 company matches for IT audit consulting companies 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?

Nexia Turkey tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most IT audit consulting companies?

Istanbul leads with 47 company records, followed by Ankara (12) and Atasehir (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 175 professional contacts with verified work emails tracked across these 146 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 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 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.