U15 or U-15 may refer to:
Submarines
- German submarine U-15, various vessels
- Greek submarine Argonaftis (U15)
- SM U-15 (Austria-Hungary), a submarine of the Austro-Hungarian Navy
Other uses
- U15 (Berlin U-Bahn), a transit line
- U15 (German universities), a university association in Germany
- Cubohemioctahedron
- Small nucleolar RNA SNORD15
- U15 Group of Canadian Research Universities
- Uppland Runic Inscription 15
Topics referred to by the same termThis disambiguation page lists articles associated with the same title formed as a letter–number combination.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: