This selection of IT services companies in Turkey includes large firms with thousands of employees. Turkcell Global Bilgi provides customer experience solutions, while HAVELSAN specializes in defense and information technology software. Garanti BBVA Teknoloji offers IT infrastructure and software development for financial organizations, and Turkish Technology focuses on aviation industry solutions. NTT DATA Business Solutions Turkey provides digital transformation services, and Innova is a Turkish IT solutions provider.
The companies on this list are predominantly focused on IT services and consulting, with a significant number catering to the financial and banking sectors. Several firms also specialize in telecommunications, defense, and aviation.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Turkcell Global Bilgiglobalbilgi.com.tr
A leading provider of customer experience solutions across various sectors with expertise in customer service, sales, technical support, and data management |
7,535 | |||
| 2 |
HAVELSANhavelsan.com
Defense and information technology software integrator specializing in command systems, war management, simulation, autonomous platforms, cyber security, homeland security and e-government technologies. |
3,634 | |||
| 3 |
Garanti BBVA Teknolojigarantibbvateknoloji.com.tr
Provides technology infrastructure, software development, system management, security, and project management services for financial organizations with real-time operations. |
3,451 | |||
| 4 |
Turkish Technologyturkishtechnology.com
An innovative and agile technology organization in the aviation industry, focused on driving customer experience through cutting-edge solutions and services |
2,586 | |||
| 5 |
Softtechsofttech.com.tr
A technology innovator with a focus on creating products that enhance quality of life, fostering in-house entrepreneurship, and supporting startups |
2,375 | |||
| 6 |
NTT DATA Business Solutions Turkeynttdata-solutions.com
NTT DATA Business Solutions provides technology services worldwide, specializing in digital transformation, innovation, and developing solutions in collaboration with industry leaders |
2,227 | |||
| 7 |
Innovainnova.com.tr
Leading Turkish IT solutions provider with 1400 professionals offering platform-independent solutions in various sectors, exporting solutions to 33 countries across 3 continents |
2,115 | |||
| 8 |
Architechtarchitecht.com
Specializing in financial technologies, our subsidiary of a leading participation bank offers innovative solutions for banking, security, and software development globally |
2,012 | |||
| 9 |
Intertech Information Technology and Marketing Inc.intertech.com.tr
Established in 1987, this tech company provides innovative IT solutions for finance and banking industries globally, offering a wide range of products and services |
1,895 | |||
| 10 |
Ziraat Teknolojiziraatteknoloji.com
One of Turkey's leading IT companies providing banking solutions and IT services to public organizations and companies worldwide |
1,809 | |||
| 11 |
Türksat Uydu Haberleşme Kablo TV ve İşletme A.Ş.turksat.com.tr
A leading satellite operator offering services in satellite communications, cable broadcasting, and IT fields in Turkey and worldwide |
1,706 | |||
| 12 | 1,570 | ||||
| 13 |
KoçSistemkocsistem.com.tr
Leader in information technologies offering diverse services in IoT, analytics, cloud, security, and more, focusing on client needs and digital transformation |
1,554 | |||
| 14 |
CCN Holdingccnholding.com
A construction company established through a partnership, known for prestigious projects in Azerbaijan and Turkey, including healthcare and tourism facilities Operations in Azerbaijan, Turkey, K Iraq, Libya |
1,357 | |||
| 15 |
IBTECH A.S.ibtech.com.tr
Development and continuous enhancement of modular core banking software, direct banking platforms, CRM, BI, and infrastructure management solutions for financial institutions. |
1,313 | |||
| 16 |
BGTSbilgeadam.com
An international technology consulting firm specializing in software development, IT consulting, business processes, QA & testing, big data, cloud, AI/ML, and cybersecurity services |
1,182 | |||
| 17 |
NETAŞnetas.com.tr
Develops end-to-end IT infrastructure and telecom technologies including cloud computing, 5G equipment, cybersecurity, and smart mobile devices for diverse sectors. |
1,008 | |||
| 18 |
Tempo BPOtempobpo.com
A company specializing in customer and information technology services, offering integrated customer experience, technology operations, and end-to-end digital transformation services |
1,006 | |||
| 19 |
Deloitte Turkeydeloitte.com.tr
The company provides audit, consulting, financial advisory, risk management, tax services to public and private clients across various industries globally |
978 | |||
| 20 | 870 | ||||
| 21 | 702 | ||||
| 22 |
BİTES - Defence & Aerospace Technologiesbites.com.tr
National high-tech defense industry and information technologies firm developing next-generation solutions for various industries with a focus on cutting-edge technologies and innovative products |
683 | |||
| 23 |
Doğuş Teknolojid-teknoloji.com.tr
A technology company providing customized solutions in various sectors, specializing in RPA, data analytics, AI, cybersecurity, and sustainable practices with a focus on innovation and talent development |
667 | |||
| 24 |
Reklam Ajansıfikirgen.com
Specializing in digital solutions, the agency provides innovative advertising services tailored to meet the unique needs of its clients |
638 | |||
| 25 |
adesso Turkeyadesso.com.tr
A digital transformation company with agile beliefs, employing over 10,000 people worldwide, offering custom software development and IT solutions |
628 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
AselsanNET Ltd.aselsannet.com.tr
providing sales, survey, installation, system setup, and service activities for electronic and communication needs of civilian institutions and users |
614 | |||
| 27 |
ATPatptech.com
A global IT solutions provider specializing in trading software, restaurant management, digital transformation, sustainable energy products, venture capital, and technology investments |
580 | |||
| 28 |
TÜBİTAK BİLGEMgov.tr
Advanced research center specializing in informatics and information security, dedicated to enhancing knowledge and innovation in the field |
554 | |||
| 29 |
Mikrolinkmikrolink.com.tr
A global telecom system integrator and supplier offering end-to-end Data Centre solutions, IT Digital Technologies, telecom projects, and fiber optic connectivity components |
553 | |||
| 30 |
Commenciscommencis.com
A company specializing in experience design, software engineering, and cloud technologies, enabling enterprises to build digital experiences and strengthen customer relationships globally |
542 | |||
| 31 |
BDH - Bilisim Destek Hizmetleribdh.com.tr
Leading system integrator in Turkey, offering consulting, managed services, and hardware support in information and communication technologies to all industries and organizations |
541 | |||
| 32 |
Innovance Consultancyinnovance.com.tr
Innovance provides technology solutions and expertise to help clients capitalize on digitization opportunities, achieve profitability, and scale their businesses globally |
538 | |||
| 33 |
TEKNOSERteknoserbilisim.com
A leading systems integration and field services provider in the information and communication technology market with expertise in installation, maintenance, and support services |
530 | |||
| 34 |
AKGÜNakgun.com.tr
A technology-focused organization offering solutions in healthcare, telecommunications, education, and defense sectors, with expertise in software development, system integration, and information security technologies |
519 | |||
| 35 |
Teknofixteknofix.com.tr
A tech support provider offering end-to-end services for seamless digital experiences, focusing on user security and innovation, with a mobile device repair academy for technicians |
518 | |||
| 36 |
GTechgtech.com.tr
A pioneering technology enterprise specializing in digital transformation for the financial sector, offering advanced software solutions, banking products, and data management services |
512 | |||
| 37 |
Testiniumtestinium.com
Innovative team providing software consulting, test outsourcing, and training services with expertise in various testing approaches and frameworks |
492 | |||
| 38 |
Kontrolmatik Technologieskontrolmatik.com
Provider of comprehensive solutions and services in LV/MV/HV, SCADA, automation, cybersecurity, and IoT for the energy, transportation, industrial, and mining sectors |
492 | |||
| 39 |
TAV Technologiestavtechnologies.aero
A trusted partner in airport technology, offering tailored solutions, round-the-clock support, and a proven international track record for seamless operations |
481 | |||
| 40 |
İSBAKisbak.istanbul
Technology provider for İBB, enhancing the municipality's services and operations through innovative solutions and digital advancements |
476 | |||
| 41 |
Artı ve Artı Teknoloji Hizmetleriartivearti.com
A domestic technology services provider partnering with leading global tech companies, offering diverse solutions with a customer-focused approach and modern management practices |
463 | |||
| 42 |
Detaysoftdetaysoft.com
Leader in SAP solutions, driving digital transformation through R&D, expert consultants, and global partnerships Trusted by 300+ clients with 1000+ successful projects worldwide |
444 | |||
| 43 |
DİAS Teknolojidiasteknoloji.com
The company provides innovative solutions in product tracking and management, focusing on product safety, public health, and tax revenue protection |
439 | |||
| 44 |
SFS Software & Consultancy CO.sfs.com.tr
Specializing in providing software solutions and consulting services for the insurance industry, including a wide range of management systems for different insurance branches |
435 | |||
| 45 |
Atmoswareatmosware.com.tr
An organization focused on developing high-quality software and training skilled developers to meet the increasing demand in the digitalization era |
435 | |||
| 46 |
SabancıDxsabancidx.com
Specializing in cybersecurity, advanced data analytics, digital marketing technologies, cloud services, and digital transformation products to offer innovative solutions to customers |
412 | |||
| 47 |
DefineXteamdefinex.com
A forward-thinking consulting house and venture builder focused on digital acceleration, innovation, and cultivating talent for the success of tomorrow |
405 | |||
| 48 |
ETB Groupetb-group.com
A leading service provider offering omni-channel customer experience management services across Europe, specializing in customer care, technical support, and tailored solutions |
393 | |||
| 49 |
i2i Systemsi2i-systems.com
An innovative international IT specialist in telecommunications, offering 5G solutions and converged revenue management for CSPs with scalable, cloud-native, and modular systems |
393 | |||
| 50 |
BTC Bilişim Hizmetleribtc-ag.com.tr
Specializing in IT-focused business consulting, we optimize processes, provide analysis, management support, and design personalized IT environments for clients' long-term development |
383 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
More company lists in Turkey
- The largest companies in Turkey 3,556
- Multinational companies in Turkey 790
- Manufacturers in Turkey 762
- Companies with in-house R&D in Turkey 512
- Retail chains in Turkey 376
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- Corporate groups and holding companies in Turkey 304
- Critical infrastructure operators in Turkey 282
- Public sector organisations in Turkey 227
- Hardware manufacturers in Turkey 224
- Energy companies in Turkey 197
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- Higher Education companies in Turkey 158
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- Motor Vehicle Manufacturing companies in Turkey 134
- Publicly traded companies in Turkey 131
- Construction companies in Turkey 129
- Automotive manufacturers and suppliers in Turkey 128