U 28
U 28 stands for:
several submarines:
- SM U 28 , submarine of the Imperial Navy (1914–1917)
- SM U 28 , a submarine of the Austro-Hungarian Navy, see SM Unterseeboote #SM U 27, U 28, U 29, U 30, U 31, U 32, U 40, U 41, U 43, U 47
- U 28 (Kriegsmarine) (1936–1944)
- U 28 (German Armed Forces) (1974-2004)
such as
- U-28A, special aircraft of the US Air Force, see Pilatus PC-12
- the U 28 line of the Ústecký kraj Rumburk - Dolní Poustevna - Sebnitz - Bad Schandau - Děčín route
