Go-Joseon (고조선; 古朝鮮), or Old Korea (2333 - 206 BC), was the first Korean kingdom. The legend says it was founded by Dangun in southern Manchuria in the basins of the Liao and Taedong Rivers.

Go-Joseon was conquered by Liu Bang, and was later revived as Wiman Joseon. Some Korean records combines Wiman Joseon, Gija Joseon and the initial Go-Joseon as periods of one Go-Joseon.