| Type: | town |
| County: | Bacău |
| Official Name: | Dărmănești |
| Leader Name: | Toma Constantin[1] |
| Leader Party: | PNL |
| Term: | 2020 - 2024 |
| Coordinates: | 46.37°N 26.4797°W |
| Elevation: | 350 |
| Area Total: | 270.43 |
| Population Total: | auto |
| Postal Code: | 605300 |
| Area Code: | (+40) 02 34 |
Dărmănești (in Romanian; Moldavian; Moldovan pronounced as /dərməˈneʃtʲ/; Hungarian: Dormánfalva) is a town in eastern Romania, in Bacău County, in the valleys of the Trotuș and Uz rivers. The town is named after one of its leaders, "Dărman" and the earliest reference to the town is from the 16th century. As of 2021, it has a population of 13,069. It officially became a town in 1989, as a result of the Romanian rural systematization program.
The town administers five villages: Dărmăneasca, Lapoș, Păgubeni, Plopu, and Sălătruc.
Dărmănești is located in the western part of Bacău County, on the border with Harghita County.