Llastres[1] (Spanish: Lastres) is one of 13 parishes (administrative divisions) in the Colunga municipality, within the province and autonomous community of Asturias, in northern Spain.

Declared as Bien de Interés Cultural, it was built in the 18th century.

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.