The State Railways of the Republic of Turkey (Turkish: Türkiye Cumhuriyeti Devlet Demiryolları), abbreviated as TCDD, is a government-owned national railway company responsible with the ownership and maintenance of railway infrastructure in Turkey, as well as the planning and construction of new lines. TCDD was formed on 4 June 1929 as part of the nationalisation of railways in Turkey.

Mission

• To prepare the railway network and vehicles ready for service,
• To construct new and branch lines when necessary,
• To manage whole railway traffic effectively,
• To provide economic, safe, comfortable, technologic, environment-friendly transport service integrated with other transportation systems.

Vision

• To become TCDD as a first choice brand for its technologic infrastructure and effective operation in transportation sector.