Company lists · Data refreshed November 2026

Top 21 IT audit advisory services based in Türkiye

RevenueBase identified 111 company matches for IT audit advisory services associated with Türkiye as of November 2026 and tracks 737 professional contacts across them, including 138 with verified work emails. Istanbul is the largest hub.

This list covers company matches for IT audit advisory services 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 6, 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 6, 2026 How this list was built
111Companies
737Contacts tracked
138Verified emails
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The 21 largest IT audit advisory services based in Türkiye

Ranked by team size
Top 21 of 111 company matches for IT audit advisory services based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchIstanbul, TürkiyeHQ recorded Nov 6, 202611-5073 contacts →

Exact match

“2017 yılında bilgi güvenliği konusunda danışmanlık, servis ve destek hizmetleri vermek amacıyla kurulan Infinitum IT, siber olaylara müdahale hizmetleri, güvenli kod…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchÇankaya, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
3Exact matchÜsküdar, TürkiyeHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“RSU provides services on IT Risk Solutions, such as IT risk and compliance, penetration testing, cyber security consultancy, digital forensic, incident response, and training to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
5Exact matchAnkara, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
6Exact matchİçerenköy, TürkiyeHQ recorded Nov 6, 20261-1019 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
8Exact matchEsenler, TürkiyeHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“EconTech combines traditional business methods with the opportunities provided by new technologies; offers its customers fast, result-oriented, cost-effective and applicable…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBeşiktaş, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
10Exact matchİstanbul (istanbul, TürkiyeHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Siber güvenlik alanında Denetim, Danışmanlık ve Uygulama, Eğitim, Adli Bilişim konularında hizmet vermektedir.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202611-507 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
13Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202611-506 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202611-505 contacts →

Exact match

“blog.btrisk.com BTRisk provides assurance and consulting services in information security and IT governance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSerdivan, TürkiyeHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
16Exact matchKartal, TürkiyeHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Kurumsal organizasyonların bilgi güvenliği risklerini sistematik biçimde yönetmelerine destek oluyoruz.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSeyhan, TürkiyeHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Vergi denetim ve danışmanlık hizmeti vermekteyim.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 20261-102 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 · Nov 6, 2026 · View company records in RevenueBase
19Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
20Exact matchUskudar, TürkiyeHQ recorded Nov 6, 20261-102 contacts →

Exact match

“AKDOGAN CONSULTING is a professional organisation that renders advisory and auditing services on local and international accounting and tax related topics.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202611-501 contacts →

Exact match

“EA Denetim, işinizi güvenle kurmanızı ve süreçte yanınızda olmayı kendisine ilke edinen uluslararası bir denetim, vergi ve danışmanlık firmasıdır.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 21 of 111 IT audit advisory services based in Türkiye

See the full list, filter by size, metro and specialty, and access 138 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT audit advisory services based in Türkiye at a glance

As of Nov 6, 2026
18.7%Verified-email coverage
6.6Average contacts per company
1-10Median size (employees)
40.5%Largest-city concentration · Istanbul
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
66
11-50
37
51-200
8

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 111 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 advisory services” 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 138 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 6, 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 advisory services 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 advisory services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT audit advisory services are there based in Türkiye?

RevenueBase identified 111 company matches for IT audit advisory services 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?

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

Which city has the most IT audit advisory services?

Istanbul leads with 45 company records, followed by Ankara (5) and Atasehir (5).

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 138 professional contacts with verified work emails tracked across these 111 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 6, 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.