German submarine U-156
{{italic title prefixed|16}}
U-156 may refer to one of the following German submarines:
- {{SMU|U-156}}, a Type U 151 submarine launched in 1917; served in World War I until sunk on 25 September 1918
- {{GS|U-156|1941}}, a Type IXC submarine that served in World War II until sunk on 8 March 1943
{{Ship index}}
{{DEFAULTSORT:U-0156}}