Nore og Uvdal is a municipality in Buskerud county, Norway.

The name is the plural form of nór which means "narrow sound or strait".

Nore og Uvdal is bordered in the north by the municipalities of Hol, Ål, and Nes; in the east by Flå and Sigdal; in the south by Rollag, Tinn, and Vinje (the latter two in Telemark county); and in the west by Eidfjord (in Vestland county).

The municipality is located at the top of the valley and traditional district of Numedal, with a widely spread area of 2,505 square kilometres (967 sq mi).

The municipality's highest point is the Borgsjåbrot mountain at 1,485 metres (4,872 ft).