SM U-9 (Austria-Hungary)

SM U-9 (Austria-Hungary) may refer to one of the following World War I German U-boats:

Q ship
Mediterranean
; co-flagged as the Austro-Hungarian U-boat SM U-9; disappeared May 1915

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.