German submarine U-93

U-93 may refer to one of the following German submarines:


 * SMU U-93, a Type U 93 submarine launched in 1916 and that served in the First World War until it went missing after 15 January 1918
 * During the First World War, Germany also had these submarines with similar names:
 * SMU UB-93, a Type UB III submarine launched in 1918 and surrendered on 21 November 1918; broken up at Rochester in 1922
 * SMU UC-93, a Type UC III submarine launched in 1918 and surrendered on 26 November 1918; broken up at La Spezia in August 1919
 * GS U-93 (1940), a Type VIIC submarine that served in the Second World War until sunk on 15 January 1942