| Llastres | |
| Settlement Type: | Parish |
| Pushpin Map: | Spain |
| Coordinates: | 43.5167°N -21°W |
| Subdivision Type: | Country |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Asturias |
| Subdivision Type2: | Province |
| Subdivision Name2: | Asturias |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Colunga |
Llastres (Spanish; Castilian: Lastres) is one of 13 parishes (administrative divisions) in the Colunga municipality, within the province and autonomous community of Asturias, in northern Spain.
The population is 1,159 (INE 2004).
Between 2009 and 2011 Doctor Mateo, a comedy drama produced for Antena 3 was filmed in the town. In the drama Llastres was called San Martín del Sella.
In 2010, Llastres received a Prince of Asturias Award, as the exemplary Asturian town of the year.