Spuž (Montenegrin/Serbian Cyrillic: Спуж) is a small town within the Municipality of Danilovgrad, Montenegro. It is located halfway between Podgorica and Danilovgrad, in the Bjelopavlići valley. The 2003 census put the population at 1,529.
It is known as a location of Spuž correctional facility (Montenegrin/Serbian: Zavod za izdržavanje kaznenih sankcija - ZIKS), the largest facility of that kind in Montenegro. It is also a stop on Nikšić–Podgorica railway.
SPU can stand for: