Kōrakuen Station is a subway train station in Bunkyō, Tokyo, Japan, operated by the Tokyo subway operator Tokyo Metro. It is directly connected by an underground pedestrian passage to the Toei-operated Kasuga Station. It is integrated with the Tokyo Dome City complex and the Bunkyō ward capitol building.

The Tokyo Metro is a major rapid transit system in Tokyo, Japan, operated by the Tokyo Metro Co. With an average daily ridership of 6.84 million passengers, the Tokyo Metro is the larger of the two subway operators in the city; the other being the Toei Subway, with 2.85 million average daily rides.