Oido station (Korean: 오이도역) is a subway station on Seoul Subway Line 4 and the Suin–Bundang Line in Siheung, South Korea. It is the current southwestern terminus of Seoul Subway Line 4 located almost 30 kilometers southwest of Seoul, connecting Oido to other parts of Korea. A commuter rail trip between this station and Seoul Station takes over an hour, and a train servicing depot is located nearby. The name of the station was decided by the surrounding area Oido island.