Nucet (Romanian pronunciation: [nuˈtʃet]; Hungarian: Diófás) is a town in Bihor County, western Transylvania, Romania. Its name means "walnut trees" both in Romanian and Hungarian. It administers two villages, Băița (Rézbánya) and Băița-Plai.

The uranium-producing Băița mine is located on the territory of the commune.

Demographics

Historical population

Year	Pop.	±%
1956	9,879	—
1966	2,768	−72.0%
1977	2,345	−15.3%
1992	2,531	+7.9%
2002	2,851	+12.6%
2011	2,148	−24.7%
2021	1,987	−7.5%
Source: Census data

At the 2021 census, Nucet had a population of 1,987. At the 2011 census, it had a population of 2,148, made up of Romanians (89.57%), Hungarians (3.44%), Roma (3.77%), and Germans (0.27%). It is the smallest town in Bihor County and the second smallest town in Romania; only Băile Tușnad is smaller than Nucet.