| Type: | commune |
| County: | Bihor |
| Criștioru de Jos | |
| Leader Name: | Fănel Tulvan |
| Leader Party: | PNL |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 46.4333°N 54°W |
| Elevation: | 401 |
| Area Total: | 105.76 |
| Population Total: | auto |
| Postal Code: | 417215 |
| Area Code: | +(40) x59 |
Criștioru de Jos (Hungarian: Alsóbiharkristyór) is a commune in Bihor County, Crișana, Romania with a population of 1,154 people. It is composed of five villages: Bâlc, Criștioru de Jos, Criștioru de Sus (Felsőbiharkristyór), Poiana (Biharmező), and Săliște de Vașcău (Vaskohszeleste).