Company lists · Data refreshed September 2026

Top 23 Customer support outsourcing companies based in Türkiye

RevenueBase identified 68 customer support outsourcing companies headquartered in Türkiye as of September 2026 and tracks 10,421 professional contacts across them, including 2,033 with verified work emails. Istanbul is the largest hub.

This list covers customer support outsourcing 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 14, 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 14, 2026 86% judged on-target in blind review
68Companies
10,421Contacts tracked
2,033Verified emails
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The 23 largest customer support outsourcing companies based in Türkiye

Ranked by team size
Top 23 of 68 customer support outsourcing companies based in Türkiye, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to customer support outsourcing 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceBeyoglu, TürkiyeHQ checked Sep 14, 202610001+6,167 contacts →

Indirect evidence

“Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.”

Source: RevenueBase Database · checked Sep 14, 2026
2Partial evidenceIstanbul, TürkiyeHQ checked Sep 14, 20265,001-10,000489 contacts →

Partial evidence

“Mplus Turkiye, one of Turkey's largest independent outsourcing providers, was founded in in Istanbul.”

Source: RevenueBase Database · checked Sep 14, 2026
3Partial evidenceİstanbul, TürkiyeHQ checked Sep 14, 20261,001-5,000315 contacts →

Partial 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 14, 2026
4Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 20261,001-5,000295 contacts →

Indirect evidence

“On its journey up to today, ETB GROUP, the foundations of which were laid in 2003, has reached the present, growing with its experience and accumulation knowledge obtained in…”

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceİzmir, TürkiyeHQ checked Sep 14, 2026501-1,000263 contacts →

Indirect evidence

“CeyBer kurulduğu 2016 yılından beri Çağrı Merkezi hizmeti vermektedir.”

Source: RevenueBase Database · checked Sep 14, 2026
6Indirect evidenceOstim Osb, TürkiyeHQ checked Sep 14, 2026501-1,000192 contacts →

Indirect evidence

“Günümüz teknolojik gelişmeleri ve iletişim kanalları sayesinde son kullanıcılar çok daha hızlı bir şekilde işlemlerini sonlandırabilmektedir.”

Source: RevenueBase Database · checked Sep 14, 2026
7Indirect evidenceSisli, TürkiyeHQ checked Sep 14, 2026501-1,000111 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 14, 2026
8Indirect evidenceBayrakli, TürkiyeHQ checked Sep 14, 202651-20092 contacts →

Indirect evidence

“We Are Together”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 2026n/a78 contacts →

Indirect evidence

“Firmaların arzuladıkları operasyonel mükemmellik, kesintisiz hizmet, maliyet avantajı ve esneklik gibi değerleri sunabilmek vizyonuyla yola çıkan Callpex, son teknoloji altyapısı…”

Source: RevenueBase Database · checked Sep 14, 2026
10Indirect evidenceGaziemir, TürkiyeHQ checked Sep 14, 2026201-50060 contacts →

Indirect evidence

“Callart Rehberlik ve Müşteri Hizmetleri, Mayıs 2012'de kurulmuştur.”

Source: RevenueBase Database · checked Sep 14, 2026
11Partial evidenceKuzguncuk, TürkiyeHQ checked Sep 14, 20265,001-10,00059 contacts →

Partial evidence

“YK Holding olarak 1996’dan bugüne birçok işletmeye sunduğumuz OUTSOURCING hizmetleriyle sektörde güçlü, güvenilir ve bilinen bir markayız.”

Source: RevenueBase Database · checked Sep 14, 2026
12Partial evidenceBeykoz, TürkiyeHQ checked Sep 14, 20261,001-5,00038 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 14, 2026
13Indirect evidenceIzmit, TürkiyeHQ checked Sep 14, 202651-20031 contacts →

Indirect evidence

“Callaktif offers "Brand Satisfaction Center" services to its clients; being volunteer to be all-inclusive corporate communication solutions provider.”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceSiirt, TürkiyeHQ checked Sep 14, 2026501-1,00019 contacts →

Indirect evidence

“Ulaknet Call Center is a company based out of Yeni,Necmettin Bilgin Cd.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 20261-1015 contacts →

Indirect evidence

“One vendor for all your needs Let us transform your organization to be ready for digital with the world's A-class solutions at the most affordable costs.”

Source: RevenueBase Database · checked Sep 14, 2026
16Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 20261,001-5,00015 contacts →

Indirect evidence

“2002 yılında İstanbul’da kurulan Tempo BPO, müşteri deneyimi yönetimi ve bilgi teknolojileri alanlarında hizmet veren iş süreçleri dış kaynak firmasıdır.”

Source: RevenueBase Database · checked Sep 14, 2026
17Partial evidenceİzmir, TürkiyeHQ checked Sep 14, 202651-20010 contacts →

Partial evidence

“As "Customer Care Global" we are a leading company in the customer care and IT services sector.”

Source: RevenueBase Database · checked Sep 14, 2026
18Indirect evidenceKayseri, TürkiyeHQ checked Sep 14, 2026201-5007 contacts →

Indirect evidence

“PremiCall, Türkiye merkezli bir BPO (İş Süreçleri Dış Kaynak Kullanımı) uzmanı olarak, tüm sektörlere yönelik esnek çağrı merkezi çözümleri sunar.”

Source: RevenueBase Database · checked Sep 14, 2026
19Partial evidenceİstanbul, TürkiyeHQ checked Sep 14, 202651-2006 contacts →

Partial evidence

“Creafone powers the growth of disruptive startups by delivering tailored outsourcing solutions.”

Source: RevenueBase Database · checked Sep 14, 2026
20Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 202611-506 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 14, 2026
21Strong evidenceMaltepe, TürkiyeHQ checked Sep 14, 202611-503 contacts →

Strong evidence

Customer Care Lösungen für E-Commerce Startups und KMU - skalierbar und kostenreduzierend mit caredsk caredsk bietet managed und unmanaged Customer Care Outsourcing für Ihren…”

Source: RevenueBase Database · checked Sep 14, 2026
22Indirect evidenceİzmir, TürkiyeHQ checked Sep 14, 202651-2002 contacts →

Indirect evidence

“Wir sind ein Modernes Callcenter das mit großer Freude Kommunikation lebt.”

Source: RevenueBase Database · checked Sep 14, 2026
23Indirect evidenceEsenyurt, TürkiyeHQ checked Sep 14, 202611-502 contacts →

Indirect evidence

“Our entrepreneurial activities are based on the commercial branch.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 23 of 68 customer support outsourcing companies based in Türkiye

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Customer support outsourcing companies based in Türkiye at a glance

As of Sep 14, 2026
19.5%Verified-email coverage
153.2Average contacts per company
51-200Median size (employees)
33.8%Largest-city concentration · Istanbul
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
7
11-50
21
51-200
13
201-500
8
501-1,000
9
1,001-5,000
7
5,001-10,000
2
10001+
1

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 68 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 support outsourcing 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 support outsourcing 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 support outsourcing 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 support outsourcing 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, 2,033 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 14, 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 customer support outsourcing 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 support outsourcing companies are there based in Türkiye?

RevenueBase identified 68 customer support outsourcing 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 support outsourcing companies?

Istanbul leads with 23 headquartered companies, followed by Izmir (4) and Ankara (3).

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 2,033 verified decision-maker contacts tracked across these 68 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 14, 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.