German South-West Africa (German: Deutsch-Südwestafrika, DSWA) is a colony of the German Empire from 1884 until 1915, when it is taken over by the Union of South Africa (as part of the British Empire) and administered as South-West Africa, finally becoming Namibia in 1990.

With an area of 835,100 km², it is one and a half times the size of the mainland German Empire in Europe (without its colonies) at the time.