Public transport in Istanbul comprises a bus network, various rail systems, funiculars, and maritime services to serve the more than 15 million inhabitants of the city spread over an area of 5712 km2.
The Istanbul Metro is a rapid transit railway network that serves the city of Istanbul, Turkey. Apart from the M11 line, it 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 April 2023, the system now includes 137 stations in service, with 56 more under construction.
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.
The M2, officially referred to as the M2 Yenikapı–Hacıosman metro line, is a rapid transit line of the Istanbul Metro. It is colored light green on the maps and route signs. The M2 operates between Hacıosman in southern Sarıyer to Yenikapı in south-central Fatih on the historic peninsula of Istanbul. Shuttle trains run from Sanayi to Seyrantepe to Nef Stadium. The M2 line has 16 stations, all but one underground, and a total length of 23.49 kilometers (14.60 mi). A daily ridership of about 500,000 makes it the busiest line of the Istanbul Metro system.
Line M5, officially referred to as the M5 Üsküdar–Çekmeköy line, is a rapid transit line of the Istanbul Metro System. It is colored deep purple on the maps and route signs. M5 is the second rapid transit line on the Asian side of İstanbul, the other in service since August 2012, the M4. Furthermore, it is the first driverless rapid transit line in Turkey.
The M7, officially referred to as the M7 Yıldız–Mahmutbey metro line is a rapid transit line of the Istanbul Metro system on the European part of Istanbul, Turkey. It is colored light pink on the maps and route signs. It is the first driverless rapid transit line of the European side of Istanbul.
Haliç is a station on the M2 line of the Istanbul Metro. It is a part of the Golden Horn Metro Bridge and is located between the districts of Fatih and Beyoğlu above the Golden Horn. The station was opened on 15 February 2014 as part of the line's extension to Yenikapı Transfer Center. The station is accessible from both sides of the Golden Horn via pedestrian walkways adjacent to the bridge. Haliç has two side platforms, one for each direction. İETT bus service can be accessed on both sides of the bridge from Tersane Street on the Beyoğlu side and Abdülezelpaşa Street on the Fatih side. Haliç is the only station on aboveground at the line.
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.
Hacıosman is an underground rapid transit station and northern terminus of the M2 line of the Istanbul Metro. It is located in southern Sarıyer under Tarabya Bayırı Avenue. Hacıosman was opened on 29 April 2011 as a northern extension of the M2 to service neighborhoods in Sarıyer. It has an island platform serviced by two tracks.
Sanayi is an underground rapid transit station on the M2 line of the Istanbul Metro. It is located under Büyükdere Avenue between Levent and Maslak, Istanbul's two main financial districts. The station was opened on 31 January 2009 as part of the northern extension to Atatürk Oto Sanayi and has two island platforms serviced by three tracks. Sanayi is one of five stations of the Istanbul Metro to have this layout along with Otogar, Yenikapı, Bostancı and Olimpiyat. The M2 shuttle service to Seyrantepe originates and terminates at Sanayi station on its own track.
İTÜ—Ayazağa is an underground rapid transit station on the M2 line of the Istanbul Metro. It is located under Büyükdere Avenue in Maslak, the second largest financial district in Istanbul after Levent. The station services the Istanbul Technical University or İTÜ as well as the Maslak financial district. İ.T.Ü.-Ayazağa has an island platform serviced by two tracks. The station was opened on 31 January 2009 as part of the northern extension of the M2 line.
Atatürk Oto Sanayi is an underground rapid transit station on the M2 line of the Istanbul Metro. It is located under Büyükdere Avenue just north of Maslak. The station opened on 31 January 2009 as part of the northern extension of the M2. It served as the northern terminus until 2 September 2010 when the line was extended further north to Darüşşafaka. Atatürk Oto Sanayi has an island platform serviced by two tracks.
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 station on the M1 line of the Istanbul Metro. It is located in north-eastern Bakırköy district next to the E80 motorway. Bakırköy—İncirli was opened on 7 March 1994 as part of the extension from Zeytinburnu. The station is located just north of Bakırköy's center and is 1.8 km (1.1 mi) north of the Bakırköy railway station.
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.
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.
The M10 is a rapid transit line in the Asian part of the Istanbul Metro system that leads to Sabiha Gökçen Airport. Initially named and tendered as the M10 Pendik Merkez–Fevzi Çakmak, the line was supposed to complete the link between Pendik railway station and the M4ᴀ extension branch of the M4 line. The tender of this project was later cancelled on 3 January 2018 and on 30 September 2022, a contract was signed with the new contractor company, with a value of ₺2.896.691.000 and works restarted on November 2022.
M1A 
Istanbul Minibus: Eyüpsultan-Otogar-Davutpaşa
