The Tokyo Metro Ginza Line (東京地下鉄銀座線) is a metro line in Tokyo, Japan, administered by the Tokyo Metro. Its color on maps is orange. Stations on this line carry the letter G followed by a number.
It is the oldest underground railway line in Japan: the portion between Ueno and Asakusa was completed by the Tokyo Underground Railway on December 30, 1927. The line reached Shibuya in 1939, although the segment west of Aoyama-itchome was operated by a separate company, Tokyo Rapid Railway, from 1937 to the TRTA's consolidation in 1941.
The 14.3 km line serves the wards of Shibuya, Minato, Chuo, Chiyoda, and Taito.
The line was extended to Shinbashi, its original plan length, in 1934 after a delay caused by inadequate capital in the wake of the Great Kanto Earthquake.
The "GinzaLine" name was applied in 1953 to distinguish the line from the new Marunouchi Line.