| 释义 |
U-104 may refer to one of the following German submarines: - {{SMU|U-104}}, a Type U 57 submarine launched in 1917 and that served in the First World War until sunk on 25 April 1918
- During the First World War, Germany also had these submarines with similar names:
- {{SMU|UB-104}}, a Type UB III submarine launched in 1917 and that disappeared in September 1918
- {{SMU|UC-104}}, a Type UC III submarine launched in 1918 and surrendered on 24 November 1918; broken up at Brest in July 1921
- {{GS|U-104|1940}}, a Type IXB submarine that served in the Second World War until she went missing after 28 November 1940
{{Shipindex|U-104}}{{italic title prefixed|16}}{{DEFAULTSORT:U-104}}Piedras rúnicas sobre Grecia#U 104 1 : Submarines of Germany |