Line M12, officially referred to as the M12 60. Yñl Parkñ-Kazñm Karabekir line, is a rapid transit line of the Istanbul Metro system, currently under construction in the Asian part of Istanbul, Turkey.
Built by the Istanbul Metropolitan Municipality, the line will be long with 11 stations. The travel time between the end stations will be 21 minutes. It is expected that it will carry around 44,000 riders per hour per direction. The line will run through three districts of Istanbul, namely Kadñköy, Ataà Âehir and ÃÂmraniye. It will connect to other rapid transit lines at Tütüncü Mehmet Efendi station to the Marmaray commuter rail, at Yenisahra to line M4 KadñköyâÂÂSabiha Gökçen Airport, and at ÃÂarà Âñ to line M5 ÃÂsküdarâÂÂSamandñra Merkez.
The investment budget of the construction is 2.376 billion. The construction of the metro began with work at the southern terminus, 60. Yñl Parkñ, in August 2017, however work was stopped on 3 January 2018.
The new mayor, Ekrem ðmamoÃÂlu, announced that the metropolitan municipality restarted the construction works. The first test runs on the line were launched on 14 March 2024, between Göztepe and Kazñm Karabekir, but construction on the line stopped again later in 2024. Work restarted in October 2025, with the line's operation now expected to begin in December 2026.