Company lists · Data refreshed September 2026
Top 25 Big consulting firms based in Türkiye
RevenueBase identified 194 big consulting firms headquartered in Türkiye as of September 2026 and tracks 1,677 professional contacts across them, including 126 with verified work emails. Istanbul is the largest hub.
This list covers big 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 21, 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 25 largest big consulting firms based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 42 contacts → | ||||
Indirect evidence “BT Bilgi Teknolojileri, Türkiye’nin önde gelen rekabetçi markalarına, “Yalın İş, Yalın Teknoloji” ilkesi ile ve 15 yıla yakın bir süredir, kurumsal yönetim danışmanlığı ve bilgi…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 32 contacts → | ||||
Partial evidence “Doing the right thing, at the right time." Welcome to the leading Consulting company on the market!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 27 contacts → | ||||
Indirect evidence “The paradigm of the business environment has shifted drastically in the past decade, and the speed of change has accelerated even further recently.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 27 contacts → | ||||
Indirect evidence “Profera is a professional services firm established in Istanbul, to provide management consultancy in human resources and business processes.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 25 contacts → | ||||
Indirect evidence “We understand, design and execute.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 19 contacts → | ||||
Indirect evidence “Trevi Teknoloji, 2009 yılında Bursa merkezli olarak kurulmuş ve sertifikalı uzman mühendis kadrosu ile çözüm odaklı hizmetler vermektedir.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 19 contacts → | ||||
Indirect evidence “Bilişim danışmanlığı, outsourcing, yazılım danışmanlığı konusunda uzman ekibimizle hizmetinizdeyiz” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 14 contacts → | ||||
Indirect evidence “Consulta Grubu, hizmet alanlarına göre kurumsal yapılanmasını oluşturmuş beş şirketten oluşmaktadır.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 14 contacts → | ||||
Partial evidence “Eurosis Consulting delivers sustainable results, helps clients achieve essential advantage by working with them to identify and build the differentiating capabilities they need to…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 contacts → | ||||
Indirect evidence “Pergamon Status Diş Ticaret A.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 10 contacts → | ||||
Indirect evidence “Taby Yazılım ve Danışmanlık Limited Şirketi” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 8 contacts → | ||||
Indirect evidence “BeStrategy | Geleceği Strateji ve Dijital Dönüşümle Tasarlıyoruz Değişimi yönetmek bir tercih değil, sürdürülebilir büyüme için bir zorunluluktur.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 8 contacts → | ||||
Indirect evidence “Mali danışman seçimine vereceğiniz önem; en az yeni yatırım alanları için vereceğiniz kararlar kadar önemlidir.” Ülkemizin sürekli içinde olduğu ekonomik, politik ve sosyal…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Indirect evidence “ALESTA, uzun yıllar boyunca kazanılan deneyimi, İletişim, Yönetim ve Dönüşüm Danışmanlığı alanlarında sizinle paylaşan iş ortağınızdır.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 contacts → | ||||
Partial evidence “Imperitech Consulting Group Inc, founded in 2009, is a management consulting and technology group operating across Türkiye, Europe, and the Middle East.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 contacts → | ||||
Indirect evidence “INNOCON was established in 2005 in order to provide consultancy services with well experienced people across the world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 6 contacts → | ||||
Indirect evidence “Teknoloji Hizmetleri ve Danışmanlığı” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Partial evidence “We are a leading business management consulting company established in 2021 in Türkiye, as an extension of previous companies and organizations to which the two partners had…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Partial evidence “Galle Consulting offers exceptional service with a vibrant team and expert partners.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Indirect evidence “Set Sistem, bir Bilişim Hizmet Firması’dır.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Indirect evidence “As CFA International, we are a professional partnership formed by the integration of three partners, namely ABBAK Hukuk, PAMİR Danışmanlık and TTE Enerji.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Indirect evidence “Gelişen ve büyüyen bir ekonomi içerisinde rekabet anlamında önde olabilmek mutlaka her işletmenin öncelikli hedefidir.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Partial evidence “Welcome to Phoenix Analytics, uniting cutting-edge technology with seasoned management consulting expertise.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Indirect evidence “B1 Yönetim; strateji, inovasyon, deneyim, araştırma ve tasarım, teknoloji çözümleri, veri ve analiz uzmanlarını bir araya getirir.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Indirect evidence “Müzik değiştiğinde dans da değişir." Kendi konfor alanınızın dışına çıkmaya ne kadar hazırsınız?” Source: RevenueBase Database · checked Sep 21, 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: big 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 big consulting firms.
- Partial evidence
- Its own public description names part of big consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name big 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 25 of 194 big consulting firms based in Türkiye
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 126 reachable decision-makers.
Free signup · no credit card
Big consulting firms based in Türkiye at a glance
As of Sep 21, 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 194 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 big 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 “big 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 big 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 big 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, 126 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 21, 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.
Big consulting firms by metro
- Big consulting firms in Istanbul82
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 big 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 big consulting firms are there based in Türkiye?
RevenueBase identified 194 big 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?
BT Bilgi Teknolojileri, headquartered in Istanbul, tops this list with the largest team on record.
Which city has the most big consulting firms?
Istanbul leads with 82 headquartered companies, followed by Ankara (15) and Atasehir (8).
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 126 verified decision-maker contacts tracked across these 194 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 194 big consulting firms based in Türkiye. Start with a free account, no credit card.
Download this list →Related lists
Big consulting firms by geography
- Big consulting firms based in Adelaide, Australia
- Big consulting firms based in Brisbane, Australia
- Big consulting firms based in Canberra, Australia
- Big consulting firms based in Melbourne, Australia
- Big consulting firms based in Perth, Australia
- Big consulting firms based in Sydney, Australia
- Big consulting firms based in Belo Horizonte, Brazil
- Big consulting firms based in Curitiba, Brazil
- Big consulting firms based in Porto Alegre, Brazil
- Big consulting firms based in Rio De Janeiro, Brazil
- Big consulting firms based in Sao Paulo, Brazil
- Big consulting firms based in Calgary, Canada
Browse the directory
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
- Big consulting firms based in Adelaide, Australia
- Big consulting firms based in Brisbane, Australia
- Big consulting firms based in Canberra, Australia
- Big consulting firms based in Melbourne, Australia
- Big consulting firms based in Perth, Australia
- Big consulting firms based in Sydney, Australia