Company lists · Data refreshed November 2026

Top 25 IT audit consultancies based in Türkiye

RevenueBase identified 193 company matches for IT audit consultancies associated with Türkiye as of November 2026 and tracks 1,360 professional contacts across them, including 228 with verified work emails. Istanbul is the largest hub.

This list covers company matches for IT audit consultancies 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 November 5, 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 Nov 5, 2026 How this list was built
193Companies
1,360Contacts tracked
228Verified emails
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The 25 largest IT audit consultancies based in Türkiye

Ranked by team size
Top 25 of 193 company matches for IT audit consultancies based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 Nov 5, 202651-20079 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 · Nov 5, 2026 · View company records in RevenueBase
2Exact matchÇankaya, TürkiyeHQ recorded Nov 5, 202651-20059 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 · Nov 5, 2026 · View company records in RevenueBase
3Exact matchİstanbul, TürkiyeHQ recorded Nov 5, 202611-5049 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 · Nov 5, 2026 · View company records in RevenueBase
4Exact matchAnkara, TürkiyeHQ recorded Nov 5, 202651-20043 contacts →

Exact match

“Değer katan bir hizmet sunmak ve bir işi büyütmek sıradan bir iş anlayışı ile gerçekleştirilemez.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchBeykoz, TürkiyeHQ recorded Nov 5, 202611-5040 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchİzmir, TürkiyeHQ recorded Nov 5, 202611-5036 contacts →

Exact match

“Çözüm Ünlüer Bağımsız Denetim ve Yeminli Mali Müşavirlik A.Ş.| Nexia International Izmir Office | nexia.com • Bağımsız Denetim • Tam Tasdik Hizmeti • Katma Değer Vergisi İadesi •…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact match19 Mayis, TürkiyeHQ recorded Nov 5, 202651-20036 contacts →

Exact match

“Kreston ATA International Audit Company has been operating in Turkey as a member of Kreston International.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchOsmangazi, TürkiyeHQ recorded Nov 5, 202651-20030 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 · Nov 5, 2026 · View company records in RevenueBase
9Exact matchIstanbul, TürkiyeHQ recorded Nov 5, 20261-1021 contacts →

Exact match

“Teolupus Denetim Güvence Hizmetleri ve Yönetim Danışmanlığı, iç denetim, kurumsal risk yönetimi ve iç kontrol, süreç iyileştirme, insan kaynakları hizmetleri, bayii (franchise)…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchİçerenköy, TürkiyeHQ recorded Nov 5, 20261-1019 contacts →

Exact match

“We are a medium-sized auditing and advisory firm.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchÇankaya, TürkiyeHQ recorded Nov 5, 202651-20016 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 · Nov 5, 2026 · View company records in RevenueBase
12Exact matchİstanbul, TürkiyeHQ recorded Nov 5, 202611-5016 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 · Nov 5, 2026 · View company records in RevenueBase
13Exact matchİçerenköy, TürkiyeHQ recorded Nov 5, 202611-5012 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchKagithane, TürkiyeHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“Building Trust Through Transparent Audit Solutions”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchYenimahalle, TürkiyeHQ recorded Nov 5, 20261-1011 contacts →

Exact match

“TRSiber Türkiye’de özellikle KOBİ’ler ve orta büyüklükteki işletmelerin bilgi güvenliği gereksinimlerinin karşılanmasında danışmanlık ve denetim hizmeti vermek üzere Ankara’da…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchBeşiktaş, TürkiyeHQ recorded Nov 5, 202611-5010 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 · Nov 5, 2026 · View company records in RevenueBase
17Exact matchAnkara, TürkiyeHQ recorded Nov 5, 20261-1010 contacts →

Exact match

“Tax / Accounting / Consultancy”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchKonak, TürkiyeHQ recorded Nov 5, 202611-508 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchİstanbul, TürkiyeHQ recorded Nov 5, 202611-508 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 · Nov 5, 2026 · View company records in RevenueBase
20Exact matchIstanbul, TürkiyeHQ recorded Nov 5, 2026501-1,0007 contacts →

Exact match

“Web: https://engage.isaca.org/istanbulchapter Twitter:@ISACAIstanbul Bilgi Teknolojileri’nin Denetimi ve Kurumsal Yönetimi ile ilgili faaliyet gösterecek olan derneğimiz uzun…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchIstanbul, TürkiyeHQ recorded Nov 5, 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 · Nov 5, 2026 · View company records in RevenueBase
22Exact matchIstanbul, TürkiyeHQ recorded Nov 5, 202611-507 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchAtaşehir, TürkiyeHQ recorded Nov 5, 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 · Nov 5, 2026 · View company records in RevenueBase
24Exact matchİstanbul, TürkiyeHQ recorded Nov 5, 202651-2006 contacts →

Exact match

“İDM İç Denetim Merkezi, şirketlerin kurumsal yönetim kalitesini artırmak, finansal ve operasyonel risklerini proaktif olarak yönetmek amacıyla bağımsız iç denetim ve danışmanlık…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchİstanbul, TürkiyeHQ recorded Nov 5, 202611-506 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 193 IT audit consultancies based in Türkiye

See the full list, filter by size, metro and specialty, and access 228 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT audit consultancies based in Türkiye at a glance

As of Nov 5, 2026
16.8%Verified-email coverage
7.0Average contacts per company
1-10Median size (employees)
32.6%Largest-city concentration · Istanbul
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
100
11-50
75
51-200
15
501-1,000
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 193 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 consultancies” 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 228 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 November 5, 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.

IT audit consultancies by metro

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 consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT audit consultancies are there based in Türkiye?

RevenueBase identified 193 company matches for IT audit consultancies associated with Türkiye as of November 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 consultancies?

Istanbul leads with 63 company records, followed by Ankara (15) and Cankaya (11).

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 228 professional contacts with verified work emails tracked across these 193 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 November 5, 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.