Istanbul Metro

The Istanbul Metro () is a rapid transit railway network that serves the city of Istanbul, Turkey. Apart from the M11 line, which is operated by TCDD Taşımacılık, the system is operated by Metro Istanbul, a public enterprise controlled by the Istanbul Metropolitan Municipality. The oldest section of the metro is the M1 line, which opened on 3 September 1989. As of 2024, the system now includes 160 stations in service, with 36 more under construction. With 243.3 kilometers, Istanbul has the 21st longest metro system in the world and the 4th longest in Europe as of 2024.