San Martín del Valledor (Galician-Asturian: Samartín) is a parish (administrative division) in Allande, a municipality within the province and autonomous community of Asturias, in northern Spain.

It is situated 31 km (19 mi) from the capital, Pola de Allande The elevation is 480 m (1,570 ft) above sea level.

It is 54.4 km2 (21.0 sq mi) in size, with a population is 83.

[1] The postal code is 33887.

This article about a location in the Principality of Asturias, Spain, is a stub.