Horst von Schroeter (10 June 1919, Bieberstein – 25 July 2006) was a German U-boat commander during World War II.

After World War II he joined the West German Navy and from 1976 to 1979 held the position of Commander of the NATO Naval forces in the Baltic Sea Approaches (COMNAVBALTAP).

U-123 sank the Spanish-registered motor ship Castillo Montealegre on 8 April 1943 west of Conakry, French Guinea.

Commander Horst von Schroeter ordered the shooting of 3 torpedoes and she sunk in less than a minute.

A few days later the Hill-class naval trawler HMS Inkpen rescued 29 survivors from a boat.