This list of consulting firms in Turkey includes a mix of large groups and mid-sized firms, with a strong presence in IT services, engineering, and business consulting. Companies like Innova, BGTS, and OBSS specialize in IT solutions, software development, and technology consulting. Engineering firms such as Yüksel Proje and EMAY INTERNATIONAL ENGINEERING and CONSULTANCY Inc. focus on civil engineering, transportation, and infrastructure projects. Professional services are represented by KPMG Türkiye, PwC Türkiye, and Deloitte Turkey, offering audit, tax, and advisory services. Mplus Türkiye provides outsourcing and offshoring consulting with a focus on customer management.
A notable pattern among these firms is their geographic distribution, with a significant concentration of headquarters in Istanbul, including Mplus Türkiye, Innova, and KPMG Türkiye. Ankara also hosts several major firms, such as STM, which provides defense and space manufacturing consulting, and Yüksel Proje, a civil engineering consultancy. Many of these companies were founded between the late 1970s and early 2000s, indicating a period of growth and establishment for the consulting sector in Turkey.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Mplus Türkiyemplusgroup.eu
Leading outsourcing provider offering CRM and AI-based solutions in 33 languages across Turkey and Europe, with a focus on customer management and satisfaction |
2,650 | |||
| 2 |
KUCUKYiLMAZ Consulting Co.facebook.com
With 25 years of experience in the friction industry, offering assistance in compounding, process, product, and business development, representing major suppliers |
2,363 | |||
| 3 |
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 | |||
| 4 |
Metro Istanbulmetro.istanbul
Operates and expands urban rail systems in Istanbul, providing efficient transportation services, maintenance, and engineering consultancy for future projects domestically and internationally |
1,799 | |||
| 5 |
STMstm.com.tr
Provides high technology project management, engineering, and consultancy services for military systems, developing domestic software and platforms for defense industry procurement operations. |
1,537 | |||
| 6 |
KPMG Türkiyekpmg.com
Providing audit, tax, and advisory services to diverse industries with a sector-focused approach and extensive local and international expertise. |
1,446 | |||
| 7 |
Ünsped Gümrük Müşavirliği ve Lojistik Hizmetler A.Ş.ugm.com.tr
Specializing in international trade logistics and customs services, the company provides quality solutions with a focus on innovation and customer satisfaction |
1,412 | |||
| 8 |
TCDD Teknik Mühendislik ve Müşavirlik A.Ş.tcddteknik.com.tr
A government-owned engineering firm specializing in engineering, consultancy, technology, signaling, energy, certification, and measurement services in various fields |
1,361 | |||
| 9 |
Yüksel Projeyukselproje.com.tr
A leading provider of design, engineering, and consultancy services for various sectors worldwide, with a focus on sustainable and innovative projects |
1,284 | |||
| 10 |
PwC Türkiyepwc.com.tr
A global network providing quality assurance, advisory, and tax services with a focus on building trust and solving important issues |
1,277 | |||
| 11 |
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 | |||
| 12 |
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 | |||
| 13 | 870 | ||||
| 14 |
Özel bir danışmanlık şirketikml.com.tr
Strategic planning, brand management, marketing, sales management, R&D, innovation, HR, supply chain, quality management, IT, corporate governance, digital transformation, corporate training |
705 | |||
| 15 |
EMAY INTERNATIONAL ENGINEERING and CONSULTANCY Inc.emay.com
A leading engineering and consultancy firm in Turkey, offering services in transportation, buildings, and water & environment sectors with a focus on architectural and engineering projects |
704 | |||
| 16 |
Data Gümrük Müşavirliğidatagumrukleme.com
A logistics business that has expanded its services and branches, focusing on customer satisfaction with modern management techniques and technological infrastructure |
703 | |||
| 17 | 702 | ||||
| 18 |
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 | |||
| 19 |
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 | |||
| 20 |
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 | |||
| 21 | 
Academyinkaik.com
Specializing in HR research, selection, project-based staffing, HR consultancy, management consultancy, and payroll services with a focus on professionalism and confidentiality |
537 | |||
| 22 |
Testiniumtestinium.com
Innovative team providing software consulting, test outsourcing, and training services with expertise in various testing approaches and frameworks |
492 | |||
| 23 |
TÜMAŞ TÜRK MÜHENDİSLİK, MÜŞAVİRLİK VE MÜTEAHHİTLİK A.Ş.tumas.com.tr
Providing pre-project planning, design, engineering, consultancy, and construction services for all project stages, including tendering, supervision, and post-implementation services |
471 | |||
| 24 |
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 | |||
| 25 |
BDO Türkiyebdo.com.tr
An audit and consultancy organization providing professional services in Audit & Assurance, Tax, Social Security, Accounting, and Advisory across the globe |
414 | |||
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 |
DefineXteamdefinex.com
A forward-thinking consulting house and venture builder focused on digital acceleration, innovation, and cultivating talent for the success of tomorrow |
405 | |||
| 27 |
NKY Architects and Engineersnky.com.tr
Specialized in project management and design for hospitals and educational facilities, providing professional services worldwide with a focus on quality development |
405 | |||
| 28 |
YKSyks.com.tr
Specializing in sectoral informing, our team expands knowledge in facilities and property management, offering reports and services in energy, waste, security, and more |
400 | |||
| 29 |
SIGMAsigmamuhendislik.com.tr
With over 30 years of experience, we are a trusted partner in engineering and consulting services for leading organizations in Turkey |
394 | |||
| 30 |
KoçZerkoczer.com
Leader in procurement & supply chain management with 20+ years of experience, providing end-to-end solutions, strategic roadmaps, mass purchases, and technological solutions |
390 | |||
| 31 |
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 | |||
| 32 |
UBM ULUSLARARASI BIRLESMIS MUSAVIRLER MUSAVIRLIK HIZMETLERI A.Şubm.com.tr
A leading technical consultancy specializing in environmental, infrastructure, and transportation projects, with expertise in financial analysis and project management |
377 | |||
| 33 |
Prokon Mühendislik ve Müşavirlik A.Ş.prokon.com.tr
Specializing in design, engineering, and consultancy services for a wide range of industrial projects worldwide with a focus on quality and innovation |
370 | |||
| 34 |
Nagarro + MBISnagarro.com.tr
Leading digital engineering and consulting firm offering innovative solutions for digital transformation, specializing in SAP services for global markets |
369 | |||
| 35 |
Sistem Global Danışmanlık A.Ş.sistemglobal.com.tr
Provider of financial, legal, and consultancy services for technology companies, specializing in corporate finance, tax, audit, patents, and international funds |
368 | |||
| 36 |
E Mali Müşavirlikemusavirlik.com
Specializing in advisory services in Mali, providing expert guidance and consulting solutions to clients |
345 | |||
| 37 |
Grant Thornton Türkiyegrantthornton.com.tr
An international organization with about 250 professionals in Istanbul, Ankara, and Bursa, providing independent audit, tax, accounting, and advisory services since 1986 |
336 | |||
| 38 |
Forvis Mazars Türkiyeforvismazars.com
Global professional services firm serving over 1,500 companies worldwide with a team of 350+ professionals across multiple offices, committed to highest standards and ethics |
334 | |||
| 39 |
FEV Türkiyefev.com
A provider of turnkey engineering solutions in the automotive industry, specializing in vehicle development, software, autonomous driving, and propulsion systems |
330 | |||
| 40 |
Solvia Digital Solutionssolviads.com
Design, integrate, and optimize SAP and IT solutions to enhance agility, resilience, and long-term digital transformation for businesses. |
318 | |||
| 41 |
Uniarch Klinik Mühendislik ve Klinik Alan Tasarım A.Şuniarch.com.tr
Uniarch aims to provide secure and efficient healthcare services by offering consultancy, planning, and project services for the design, technology selection, and operations of healthcare facilities |
317 | |||
| 42 |
SPA MÜHENDİSLİKspalinetr.com
Specializing in terminal operation systems in the fuel and chemical industry, designing fire systems, and providing risk analysis solutions for process safety |
316 | |||
| 43 |
DETAM Sirketler Grubudetam.com.tr
A leading consultancy group in Turkey providing a wide range of services in occupational health, safety, environmental services, legal consulting, and HR |
284 | |||
| 44 |
RİSUS INTERNATIONALrisusinternational.com
Specializing in change management, analysis, and training services to improve organizational performance through customized solutions and development programs |
244 | |||
| 45 |
VİZYONvizyongrubu.com
Specializing in tax, auditing, and consulting services to provide comprehensive financial guidance and support to clients |
233 | |||
| 46 |
Hypehype.com.tr
A dynamic team providing strategic planning, online data analysis, advertising management, and marketing consultancy services to over 100 leading brands |
213 | |||
| 47 | 205 | ||||
| 48 |
SGK& İş Hukuku&İ.K Danışmanlık/Denetim ve Eğitimekstracozum.com
Specializing in HR/accounting departments, providing training on labor laws, resolving issues, preventing penalties, and offering consultancy for benefit programs |
199 | |||
| 49 |
ELTEMTEK A.Şeltemtek.com.tr
Providing a wide range of engineering, investment consultancy, operation, system analysis, mapping, and expropriation services nationally and internationally with a focus on environmental sustainability |
186 | |||
| 50 |
Carettacaretta.net
A software company offering custom development, IT consultancy, and outsourcing services, specializing in solutions for the pharmaceutical sector, with global quality standards |
186 | |||
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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
- Companies with a mobile app in Turkey 312
- 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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- Consumer goods companies in Turkey 193
- Food and Beverage Manufacturing companies in Turkey 184
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- Higher Education companies in Turkey 158
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- Family-owned companies in Turkey 137
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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