German submarine U-71
{{italic title prefixed|16}}
U-71 may refer to one of the following German submarines:
- {{SMU|U-71||6}}, a Type UE I submarine launched in 1915 and that served in World War I until surrendered on 23 February 1919; broken up at Cherbourg in 1921
- During World War I, Germany also had these submarines with similar names:
- {{SMU|UB-71||6}}, a Type UB III submarine launched in 1917 and sunk on 21 April 1918
- {{SMU|UC-71||6}}, a Type UC II submarine launched in 1916 and sunk on 20 February 1919 on way to surrender
- {{GS|U-71|1940|6}}, a Type VIIC submarine that served in World War II until scuttled on 2 May 1945
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