Presno  | |
|---|---|
| Coordinates: 43°28′00″N6°59′00″W / 43.466667°N 6.983333°W | |
| Country | Spain | 
| Autonomous community | Asturias | 
| Province | Asturias | 
| Municipality | Castropol | 
Presno is one of nine parishes (administrative divisions) in the Castropol municipality, within the province and autonomous community of Asturias, in northern Spain.
The population is 385 (INE 2005).