U-131 may refer to one of the following German submarines:
- SM U-131, a Type U 127 submarine laid down during the First World War but unfinished at the end of the war; broken up incomplete 1919–20
- During the First World War, Germany also had this submarine with a similar name:
- SM UB-131, a Type UB III submarine launched in 1918 and that served in the First World War until surrendered on 24 November 1918; ran aground near Hastings on 9 January 1921; broken up
- During the First World War, Germany also had this submarine with a similar name:
- German submarine U-131 (1941), a Type IXC submarine that served in the Second World War until sunk 17 December 1941
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.