The Tokyo Metro Namboku Line is a subway line in Tokyo, Japan, operated by Tokyo Metro. It runs from Meguro Station in the south to Akabane-Iwabuchi Station in the north, covering a distance of approximately 21 kilometers. The line features 19 stations and connects with several other subway and train lines, making it a vital part of Tokyo's public transportation network. Opened in 1991, the Namboku Line is known for its efficient service and modern trains. It primarily serves the Minato and Bunkyo wards, providing access to various commercial and residential areas. The line is characterized by its green color on subway maps.