Company lists · Data refreshed September 2026

Top 25 Customer service consulting companies based in Türkiye

Name: Customer service consulting companies based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 247 companies tracked

RevenueBase identified 247 customer service consulting companies headquartered in Türkiye as of September 2026 and tracks 8,779 professional contacts across them, including 2,012 with verified work emails. Istanbul is the largest hub.

This list covers customer service consulting companies 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 19, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

247Companies

8,779Contacts tracked

2,012Verified emails

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The 25 largest customer service consulting companies based in Türkiye

Ranked by team size

Top 25 of 247 customer service consulting companies based in Türkiye, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to customer service consulting companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Turkcell Global Bilgi	Indirect evidence	Beyoglu, TürkiyeHQ checked Sep 19, 2026	10001+	6,167 contacts →
	Indirect evidence “Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Source: RevenueBase Database · checked Sep 19, 2026
2	Echoccs	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	1,001-5,000	315 contacts →
	Indirect evidence “EchoCCS operational and strategic consultancy services such as call center and business process outsourcing services (Call Center Outsourcing, BPO), advanced call center…” Source: RevenueBase Database · checked Sep 19, 2026
3	Cottgroup	Partial evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	201-500	117 contacts →
	Partial evidence “CottGroup® is a holistic service organization that offers a full range of consulting, outsourcing, technology, and training services to manage operations and provide practical…” Source: RevenueBase Database · checked Sep 19, 2026
4	Pozitif Kurumsal Çağrı Merkezi Hizmetleri	Indirect evidence	Sisli, TürkiyeHQ checked Sep 19, 2026	501-1,000	111 contacts →
	Indirect evidence “İleri düzey satış stratejileri, memnuniyet ve anket hizmetleri, denetim aramaları, hizmet odaklı özel çalışmaları ile sektörde adından söz ettiren Pozitif Kurumsal A.Ş, alt…” Source: RevenueBase Database · checked Sep 19, 2026
5	Conforcus Bilişim	Indirect evidence	Atasehir, TürkiyeHQ checked Sep 19, 2026	51-200	58 contacts →
	Indirect evidence “As Conforcus Bilişim Danışmanlık A.Ş.” Source: RevenueBase Database · checked Sep 19, 2026
6	Procat A.S	Partial evidence	Beykoz, TürkiyeHQ checked Sep 19, 2026	1,001-5,000	38 contacts →
	Partial evidence “Since 2004, we have been helping customers transform and benchmark their contact centres to be amongst the best in the world using our experienced team and leading technologies.” Source: RevenueBase Database · checked Sep 19, 2026
7	Skycon Consulting	Partial evidence	Zühtüpaşa, TürkiyeHQ checked Sep 19, 2026	11-50	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 19, 2026
8	Inera Consulting	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “Inera Bilişim İş Analitikleri alanında hizmet veren, yetkin danışman kadrosu ile firmaların ihtiyaçlarını hızlı karşılık verebilen, tüm paydaşları için katma değer yaratmayı…” Source: RevenueBase Database · checked Sep 19, 2026
9	Binovist	Partial evidence	Sisli, TürkiyeHQ checked Sep 19, 2026	11-50	30 contacts →
	Partial evidence “Binovist Binovist is an innovative "IT Consultancy" company with many years of expertise and experience offering its customers services in the business solutions field, with a…” Source: RevenueBase Database · checked Sep 19, 2026
10	Benova Consulting	Indirect evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Sonuç odaklı bir yönetim danışmanlığı firması olarak sektörünüzde etki bırakmanız için kurumunuza özel tasarlanan çözümlerimizle yanınızdayız!” Source: RevenueBase Database · checked Sep 19, 2026
11	UDE Global	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	1-10	25 contacts →
	Indirect evidence “We understand, design and execute.” Source: RevenueBase Database · checked Sep 19, 2026
12	Regna Consulting	Strong evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	11-50	24 contacts →
	Strong evidence “Regna Consulting is an experienced Salesforce and SAP Partner about Customer Relationship Management, Customer Experience, C/4HANA, Customer Engagement and Commerce (CEC)…” Source: RevenueBase Database · checked Sep 19, 2026
13	Pergamon Status DIŞ Ticaret A. Ş	Indirect evidence	İzmir, TürkiyeHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Pergamon Status Diş Ticaret A.” Source: RevenueBase Database · checked Sep 19, 2026
14	Expremus	Indirect evidence	Yenisehir, TürkiyeHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “2008 Yılında Garanti Eğitim ve Danışmanlık olarak kurulan şirketimiz, global büyüme stratejilerimiz doğrultusunda 2019 yılı itibariyle Expremus olarak hizmet vermeye devam…” Source: RevenueBase Database · checked Sep 19, 2026
15	musterihizmetleri.com	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “musterihizmetleri.com" müşterisine önem veren kurumların, özellikle katma değerli hizmet üretimi, hizmette farklılık yaratma ile iş stratejilerini uygulamaya dönüştüren…” Source: RevenueBase Database · checked Sep 19, 2026
16	4biz	Indirect evidence	Besiktas, TürkiyeHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “4BIZ is making consultancy services for Strategy, Marketing and Product Management.” Source: RevenueBase Database · checked Sep 19, 2026
17	Torch Consultancy	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Torch Consultancy, Kasım 2015’ten beri insan kaynakları danışmanlığı hizmetleri vermektedir.” Source: RevenueBase Database · checked Sep 19, 2026
18	Seomew	Indirect evidence	Atasehir, TürkiyeHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “E-Ticaret sitelerinin ihtiyacı olacak 360 danışmanlık hizmetleri sağlamaktayız.” Source: RevenueBase Database · checked Sep 19, 2026
19	Natustech	Indirect evidence	Küçükbakkalköy, TürkiyeHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “Türkiye'nin en büyük ve kurumsal firmalarında birden fazla projede, farklı sektörlerin iş çözümlerinde görev almış danışmanlarımız ile size ve firmanıza en iyi global çözümleri…” Source: RevenueBase Database · checked Sep 19, 2026
20	Infology Bilişim	Indirect evidence	Maltepe, TürkiyeHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Infology Bilişim İş Analitikleri çözümleri üretmek için kurulmuş, uzman danışmanları ile müşteri memnuniyeti sağlayan bir danışmanlık şirketidir.” Source: RevenueBase Database · checked Sep 19, 2026
21	Dataeva	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Dataeva; Continuously develops innovative technology solutions and services.” Source: RevenueBase Database · checked Sep 19, 2026
22	Innocon Bilişim Sistemleri	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 19, 2026	11-50	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 19, 2026
23	BSY Bi̇lgi̇ Si̇stemleri̇ Yöneti̇m Danişmanlik Hi̇zmetleri̇ A.Ş	Indirect evidence	Bursa, TürkiyeHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “BSY Bilgi Sistemleri Yönetim AŞ.” Source: RevenueBase Database · checked Sep 19, 2026
24	KRK Akademi Çağrı Merkezi Eğitim VE Danışmanlık Hizmetleri	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Kuruluş Felsefesini “Müşteri Odaklı Hizmet Anlayışı” olarak belirlemiş olan kurumumuz, Çağrı Merkezi alanında Dış Kaynak Kullanım Hizmetleri, Çağrı Merkezi Kurulum ve…” Source: RevenueBase Database · checked Sep 19, 2026
25	PDR Group	Indirect evidence	Uskudar, TürkiyeHQ checked Sep 19, 2026	51-200	5 contacts →
	Indirect evidence “PDR Group is established in 1989 under the name TMI Turkey.” Source: RevenueBase Database · checked Sep 19, 2026

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: customer service consulting companies. 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 customer service consulting companies.
Partial evidence: Its own public description names part of customer service consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer service consulting companies. 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 247 customer service consulting companies based in Türkiye

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Customer service consulting companies based in Türkiye at a glance

As of Sep 19, 2026

22.9%Verified-email coverage

35.5Average contacts per company

1-10Median size (employees)

40.9%Largest-city concentration · Istanbul

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

146

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 247 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 customer service consulting companies, 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 “customer service consulting companies”. 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 customer service consulting companies), 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 customer service consulting companies, 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, 2,012 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 19, 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.

Customer service consulting companies by metro

Customer service consulting companies in Istanbul101

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 customer service consulting companies, 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 customer service consulting companies are there based in Türkiye?

RevenueBase identified 247 customer service consulting companies 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?

Turkcell Global Bilgi, headquartered in Beyoglu, tops this list with the largest team on record.

Which city has the most customer service consulting companies?

Istanbul leads with 101 headquartered companies, followed by Atasehir (11) and Sisli (11).

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 2,012 verified decision-maker contacts tracked across these 247 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 19, 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 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.