U 13
U 13 or U13 stands for:
- Udet U 13 , German aircraft from Udet Flugzeugbau
- U 13 (film) , American drama directed by John Ford (1930)
- an age and performance class in sport, see class division in sport
- several subway lines in different cities
U 13 denotes several submarines:
- SM U 13 , submarine of the German Imperial Navy
- U 13 (Kriegsmarine) , submarine of the German Kriegsmarine
- U 13 (Bundeswehr) , submarine of the German Navy
