Company lists · Data refreshed November 2026

Top 25 Internal audit advisory firms based in Türkiye

RevenueBase identified 305 company matches for internal audit advisory firms associated with Türkiye as of November 2026 and tracks 4,578 professional contacts across them, including 363 with verified work emails. Istanbul is the largest hub.

This list covers company matches for internal audit advisory 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 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
305Companies
4,578Contacts tracked
363Verified emails
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The 25 largest internal audit advisory firms based in Türkiye

Ranked by team size
Top 25 of 305 company matches for internal audit advisory firms 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 matchİstanbul, TürkiyeHQ recorded Nov 6, 2026201-500211 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202651-20093 contacts →

Exact match

“Vergi, Denetim, Danışmanlık”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
4Exact matchSariyer, TürkiyeHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“PKF Turkey was established in 2005 in Istanbul.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Vezin Yeminli Mali Müşavirlik A.Ş, uzun yıllar kamudan sonra özel sektörde Yeminli Mali Müşavirlik ve üst düzey yöneticilik yapmış Hesap Uzmanları tarafından kurulmuş olup, şirket…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact 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
7Exact 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
8Exact matchBeykoz, TürkiyeHQ recorded Nov 6, 202611-5040 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchOsmangazi, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
10Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
11Exact 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
12Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Türkiye'de 2003 yılında başlattığımız faaliyetlerimize, bugün İstanbul'da bulunan merkez ofisimizde, konusunda deneyimli ve uzmanlaşmış kadromuzla, sektör odaklı ve müşterilerine…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchÇankaya, TürkiyeHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
14Exact 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
15Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“REHBER, Bağımsız Denetim, Finansal Danışmanlık, Yeminli Mali Müşavirlik, Ulusal ve Uluslararası Fon Denetimi, Vergi ve Hukuk Müşavirliği ve Bilgi Sistemleri Denetimi konularında…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-20014 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 · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBornova, TürkiyeHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“1996 yılında İzmir’de kurulan SİMGEÇÖZÜMEVİ, bugün 500' ü aşkın müşterisi ve 15' e yakın iş ortağı ile alanında uzmanlaşmış personeli ve kurumsal organizasyon yapısı ile hizmet…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchKonak, TürkiyeHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“İZDENETİM deneyimli ve profesyonel bir ekip tarafından kurulmuş olup; • Yeminli mali müşavirlik, • Bağımsız denetim, • Denetim hizmetleri, • Yönetim danışmanlığı, • Mali…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Optimum Denetim 2011 yılında kurulmuştur.”

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

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSisli, TürkiyeHQ recorded Nov 6, 202651-20011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Ofisimiz farklı ve kaliteli hizmet sunarak, müşteri memnuniyetini en yüksek düzeyde tutma anlayışıyla hareket eder.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBesiktas, TürkiyeHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“20 years of experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact 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
25Exact matchAnkara, TürkiyeHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“Tax / Accounting / Consultancy”

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

Showing 25 of 305 internal audit advisory firms based in Türkiye

See the full list, filter by size, metro and specialty, and access 363 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal audit advisory firms based in Türkiye at a glance

As of Nov 6, 2026
7.9%Verified-email coverage
15.0Average contacts per company
1-10Median size (employees)
30.2%Largest-city concentration · Istanbul
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
157
11-50
122
51-200
22
201-500
4

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 305 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 advisory 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 363 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.

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

How many internal audit advisory firms are there based in Türkiye?

RevenueBase identified 305 company matches for internal audit advisory firms 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?

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 advisory firms?

Istanbul leads with 92 company records, followed by Ankara (28) and Cankaya (14).

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 363 professional contacts with verified work emails tracked across these 305 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.