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 in 1989. As of 2024, the system now includes 159 stations in service, with 36 more under construction. With 243.3 kilometers, Istanbul has the 22nd longest metro line in the world and the 5th in Europe.
Line M1, officially referred to as the M1 Yenikapı–Atatürk Airport/Kirazlı metro line, also known as the Istanbul Light Metro, is a rapid transit line of the Istanbul Metro. It is colored red on the maps and route signs. Opened in 1989, it was the first rapid transit line in Istanbul and Turkey and its opening started the revival of mass-transit in Turkish cities.
Yenikapı Transfer Center, referred to as Yenikapı, is an underground transportation complex in Istanbul. It is located in south-central Fatih in the neighborhood of Yenikapı, hence the name of the hub. The complex is right next to the Yenikapı railway station serving the T6 light rail line and a short walk away from the Yenikapı Ferry Terminal and İDO ferry service. Yenikapı complex links two stations of Istanbul Metro to a railway station of the Turkish State Railways on the trans-Bosphorus Marmaray tunnel. Yenikapı is the largest rapid transit station in Turkey.
Aksaray is a rapid transit station on the M1 line of the Istanbul Metro. It is located in central Fatih under Adnan Menderes Boulevard near Aksaray square. Aksaray was opened on 3 September 1989 as part of the first rapid transit line in Istanbul and Turkey. Between 1989 and 2014, Aksaray was the eastern terminus of the M1. On 9 November 2014, the M1 was extended 0.8 kilometres (0.50 mi) south to Yenikapı Transfer Center where connections to the M2 line and Marmaray as well as İDO seabus service are available. From Aksaray connection to the T1 tram line is available via a short walk to Yusufpaşa station. Connections to İETT bus service are also available.
Emniyet—Fatih is an underground station on the M1 line of the Istanbul Metro. It is located in west-central Fatih under Adnan Menderes Boulevard. Emniyet—Fatih was opened on 3 September 1989 as part of the first rapid transit line in Istanbul and Turkey and is one of the six original stations on the M1 line. The station services several important municipal buildings such as the Istanbul Police Headquarters, Fatih Municipal Building and the Istanbul Tax Offices Directorate.
Topkapı—Ulubatlı is an underground station on the M1 line of the Istanbul Metro. It is located in eastern Fatih between the neighborhoods of Karagümrük and Topkapı in Istanbul. An out-of-system transfer to Vatan station on the T4 light-rail line is available as well as connections to İETT city buses. Topkapı—Ulubatlı was opened on 3 September 1989 as part of the first rapid transit line in Istanbul as well as Turkey and is one of the six original stations of the M1 line. The station is right next to the Byzantine-era Theodosian Walls of Constantinople. The station gets part of its name from the 15th century soldier, Ulubatlı Hasan who was one of the first Ottoman soldiers to scale the walls during the Fall of Constantinople.
Kirazlı, or Kirazlı-Bağcılar, is an underground rapid transit complex of the Istanbul Metro and is serviced by lines M1B and M3.
Bayrampaşa—Maltepe is a rapid transit station on the M1 line of the Istanbul Metro. It is located in southern Eyüp, adjacent to the O-3 highway. An out-of-system connection Demirkapı station on the T4 light rail line is available as well as İETT buses.
Sağmalcılar is a rapid transit station on the M1 line of the Istanbul Metro. It is located in central Bayrampaşa, adjacent to the O-3 highway. Sağmalcılar was opened on 3 September 1989 as part of the first rapid transit line in Istanbul as well as Turkey and is one of the six original stations of the M1 line.
Kocatepe is a rapid transit station on the M1 line of the Istanbul Metro. It is located in central Bayrampaşa in the southern part of the neighborhoods Kocatepe. The station is on the north side of the Forum Istanbul Shopping Mall and has direct access to the mall. Kocatepe was opened on 3 September 1989 as part of the first rapid transit line in Istanbul as well as Turkey and is one of the six original stations of the M1 line. The station briefly served as the western terminus of the M1 between September and December 1989 until the line was extended to Esenler.
Otogar is a rapid transit station on the M1 line of the Istanbul Metro. It is located in southwestern Bayrampaşa in the center of the Esenler Bus Terminal.
Davutpaşa—YTÜ is a rapid transit station on the M1 line of the Istanbul Metro located in southern Esenler, close to the entrance of Yıldız Technical University or YTÜ. It was opened on 31 January 1994 as part of the Otogar-Zeytinburnu extension and is one of five stations of this extension.
Merter is a rapid transit station on the M1 line of the Istanbul Metro located in southern Güngören. It was opened on 31 January 1994 as part of the Otogar-Zeytinburnu extension and is one of the five stations of this extension.
Zeytinburnu is a rapid transit station on the M1 line of the Istanbul Metro. Even though it is named Zeytinburnu, the station is not located within Zeytinburnu district borders but within Bakırköy district borders close to Zeytinburnu. It was opened on 31 January 1994 as part of the Otogar-Zeytinburnu extension and is one of the five stations of this extension.
Bakırköy—İncirli is an underground rapid transit complex of the Istanbul Metro and served by lines M1A and M3. It is located in north-eastern Bakırköy district next to the E80 motorway.
Üçyüzlü is an underground rapid transit station on the M1B line of the Istanbul Metro. It was opened on 14 June 2013 as part of the four new stations of the M1B extension to Kirazlı.
Bağcılar Meydan is an underground rapid transit station on the M1B line of the Istanbul Metro. It was opened on 14 June 2013 as part of the four new stations of the M1B extension to Kirazlı. The station is in the vicinity of the Bağcılar tram station, which is serviced by the T1 line to Zeytinburnu and Kabataş.
Ataköy—Şirinevler is a station on the M1 line of the Istanbul Metro in Bakırköy, Istanbul. Connection to the Istanbul Metrobus is available. This station is terminal station for temporary.
Yenibosna is a station on the M1 line of the Istanbul Metro in Bakırköy, Istanbul. The station was opened on 25 July 1995 and was the western terminus of the M1 until 2002, when the line was extended towards Atatürk Airport.
DTM—İstanbul Fuar Merkezi is a station on the M1 line of the Istanbul Metro in Bakırköy, Istanbul. The station consists of an elevated island platform servicing two tracks within the Istanbul World Trade Center.
M1A 
Istanbul Minibus: Eyüpsultan-Otogar-Davutpaşa
