Company lists · Data refreshed September 2026
Top 9 Investigative consulting firms based in Türkiye
RevenueBase identified 26 investigative consulting firms headquartered in Türkiye as of September 2026 and tracks 178 professional contacts across them, including 24 with verified work emails. Istanbul is the largest hub.
This list covers investigative consulting firms headquartered in Türkiye, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 9 largest investigative consulting firms based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 22 contacts → | ||||
Indirect evidence “1972'den günümüze, Türkiye'de araştırma sektörünün kuruluşunda, gelişmesinde ve uluslararası alana açılmasında öncü rol oynayan,'araştırmacı' kimliklerinin kamuoyuna mal olduğu…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 22 contacts → | ||||
Strong evidence “Esfor Investigative Services, Brand Protection & Security Consulting is located in Istanbul Turkey.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 17 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6 contacts → | ||||
Partial evidence “TRI Metalurji AŞ provides technical consulting in metallurgical processes, materials and failure analyses, development and execution of R&D projects, assistance in project…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 5 contacts → | ||||
Partial evidence “Galle Consulting offers exceptional service with a vibrant team and expert partners.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 5 contacts → | ||||
Partial evidence “KS CONSULTING was formed in 2010 by internationally experienced owners entrusted with long term relationships with global corporate clients.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 4 contacts → | ||||
Partial evidence “Cerebra CPAs & Advisors is an accounting and forensic firm located in Istanbul/Turkey, providing services in the fields of fraud investigation, forensic accounting, fraud…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 4 contacts → | ||||
Indirect evidence “About Us: Optimum Audit was established in 2011.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2 contacts → | ||||
Indirect evidence “Zenith Universal büyümek ve yurtdışı pazarlara erişmek isteyen firmalara uluslararası hukuk, yatırım ve strateji çözümleri sağlayan uluslararası bir danışmanlık şirketidir.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: investigative consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names investigative consulting firms.
- Partial evidence
- Its own public description names part of investigative consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name investigative consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 9 of 26 investigative consulting firms based in Türkiye
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 24 reachable decision-makers.
Free signup · no credit card
Investigative consulting firms based in Türkiye at a glance
As of Sep 28, 2026Companies by employee count
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 26 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among investigative consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Türkiye whose own description of what they do matches “investigative consulting firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names investigative consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among investigative consulting firms, and records with no verified work email. Companies headquartered outside Türkiye are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 24 across the full list. 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.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names investigative consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many investigative consulting firms are there based in Türkiye?
RevenueBase identified 26 investigative consulting firms headquartered in Türkiye as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Estima Araştırma & Danışmanlık A.Ş, headquartered in Istanbul, tops this list with the largest team on record.
Which city has the most investigative consulting firms?
Istanbul leads with 8 headquartered companies, followed by Atasehir (5) and Ankara (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 24 verified decision-maker contacts tracked across these 26 companies.
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.
Ready to reach these companies? Verified emails and direct dials for all 26 investigative consulting firms based in Türkiye. Start with a free account, no credit card.
Download this list →Related lists
Investigative consulting firms by geography
- Investigative consulting firms based in Melbourne, Australia
- Investigative consulting firms based in Sydney, Australia
- Investigative consulting firms based in Sao Paulo, Brazil
- Investigative consulting firms based in Toronto, Canada
- Investigative consulting firms based in Paris, France
- Investigative consulting firms based in Mumbai, India
- Investigative consulting firms based in New Delhi, India
- Investigative consulting firms based in Barcelona, Spain
- Investigative consulting firms based in Madrid, Spain
- Investigative consulting firms based in London, United Kingdom
- Investigative consulting firms based in Atlanta, United States
- Investigative consulting firms based in Austin, United States
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 Smart Search, 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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Investigative consulting firms based in Melbourne, Australia
- Investigative consulting firms based in Sydney, Australia
- Investigative consulting firms based in Sao Paulo, Brazil
- Investigative consulting firms based in Toronto, Canada
- Investigative consulting firms based in Paris, France
- Investigative consulting firms based in Mumbai, India