Mukho (Korean pronunciation: [mukʰo]) is a harbor in Donghae City, Gangwon Province, South Korea. It is located on the shore of the Sea of Japan (East Sea). In the past it played an important role in the shipping of iron ore and coal; much of this role has been taken over by Donghae Harbor in recent years. Mukho is an important harbor of refuge and home to a large number of fishing vessels. A passenger ferry operates from the port to Ulleung Island. The harbor is connected to land-based transportation by two stations on the Yeongdong Line and an interchange on the Donghae Expressway. The harbor first opened in 1941.