German submarine U-105
U-105 may refer to one of the following German submarines:

 , a Type U 93 submarine launched in 1917 that served in the First World War, and surrendered in 1918; became French submarine Jean Autric. During the First World War, Germany also had these submarines with similar names:
 , a Type UB III submarine launched in 1917 and surrendered in 1919.
 , a Type UC III submarine launched in 1918 and surrendered the same year. , a Type IXB submarine that served in the Second World War and was sunk in 1943. Submarines of Germany