| Type: | town |
| County: | Bihor |
| Official Name: | Nucet |
| Leader Name: | Mircea-Adrian Tuduce[1] |
| Leader Party: | PSD |
| Term: | 2020 - 2024 |
| Coordinates: | 46.4842°N 22.5614°W |
| Area Total: | 41.11 |
| Population Total: | auto |
| Postal Code: | 415400 |
| Area Code: | (+40) 02 59 |
Nucet (in Romanian; Moldavian; Moldovan pronounced as /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.
At the 2021 census, Nucet had a population of 1,987.[2] 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%).[3] It is the smallest town in Bihor County and the second smallest town in Romania; only Băile Tușnad is smaller than Nucet.