Line M12, officially referred to as the M12 60. Yıl Parkı-Kazım 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 Kadıköy, Ataşehir and Ümraniye. It will connect to other rapid transit lines at Tütüncü Mehmet Efendi station to the Marmaray commuter rail, at Yenisahra to line M4 Kadıköy–Sabiha Gökçen Airport, and at Çarşı to line M5 Üsküdar–Sultanbeyli.
The investment budget of the construction is 2.376 billion. The construction of the line began with work at the southern terminus, 60. Yıl Parkı, in August 2017, however work was stopped on 2 January 2018.
The new mayor, Ekrem İmamoğlu, 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 Kazım 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 on 19 December 2026.
construction on the line is 97% complete.
Stations NoStationDistrictConnectionsTypeNotes1KadıköyİETT Bus: 4, 16, 16D, ER1, ER2, FB1, FB2, GZ1, GZ2UndergroundGöztepe Park・Caddebostan・Bağdat Avenue2 (Göztepe)İETT Bus: 4, 16, 16D, ER1, ER2, FB1, FB2, GZ1, GZ2Tütüncü Mehmet Efendi Street3İETT Bus: 2, 8E, 9K, 10B, 10E, 10G, 14AK, 14B, 14CE, 14ES, 14Y, 14ÇK, 14ŞB, 15SK, 15YK, 15ÇK, 17, 17L, 19ES, 19F, 19K, 19M, 19S, 19Y, 20D, 20K, ER1, ER2, FB1, FB2, GZ1, GZ2Sahrayıcedit Mosque・Fahrettin Kerim Gökay Street4AtaşehirİETT Bus: 8A, 8YHabire Yahşi Anatolian High School5AtaşehirİETT Bus: 8A, 8K, 8Y, 10A, 13, 13AB, 16M, 19FS, 256, KM46Ülker Sports and Event Hall・Palladium Shopping Mall6Ümraniye (Finanskent, planned)・ (planned) İETT Bus: 8K, 8Y, 11M, 13B, 13H, 13M, 13Y, 14BK, 19FS, 20DIstanbul Financial Center7İETT Bus: 8K, 8Y, 11M, 13B, 13H, 13M, 19FS, 20DSOYAK Yenişehir Apartments8İETT Bus: 9A, 10G, 11M, 13AB, 14B, 20Üİstiklal Martyr Lokman Oktay Secondary School・Istiklal Park9İETT Bus: 9A, 9Ç, 9Ş, 9Ü, 9ÜD, 10, 11D, 11G, 11K, 11P, 11V, 13, 13B, 13H, 13TD, 14, 14B, 14DK, 14E, 14ES, 14K, 14YE, 19D, 20, 131, 131A, 131B, 131C, 131T, 131TD, 131YS, 131Ü, 138, 139, 139A, 320, 522Ümraniye Bazaar・Alemdağ Street10İETT Bus: 7, 9, 9K, 9T, 10, 10G, 11, 11A, 11ÇB, 11K, 11P, 11ST, 11ÜS, 13H, 14D, 14E, 14K, 14YK, 15B, 15BK, 15TK, 15TY, 20, 20K, MR9Ümraniye Municipality & District Governorate・Istanbul 29 May University Ümraniye Campus・Ümraniye Training & Research Hospital11 (planned)İETT Bus: 7, 11K, 11ST, 14E, 14K, 15B, 15YK 20KAdem Yavuz Street・Seyrantepe Street
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