U-107 may refer to one of the following German submarines:
- SM U-107, a Type U 93 submarine launched in 1917 and that served in World War I until surrendered on 20 November 1918; broken up at Swansea in 1922
- During the First World War, Germany also had this submarine with a similar name:
- SM UB-107, a Type UB III submarine launched in 1917 and sunk between 28 July – 4 August 1918
- During the First World War, Germany also had this submarine with a similar name:
- German submarine U-107 (1940), a Type IXB submarine that served in World War II until sunk on 18 August 1944
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.