Trespando is a parish (administrative division) in Siero, a municipality within the province and autonomous community of Asturias, in northern Spain. It is 4km (02miles) from the municipality's capital Pola de Siero and is in the heart of the Asturian mining region.
Situated at 230m (760feet) above sea level, it is 4.1km2 in size, with a population of 250 (INE 2006). The postal code is 33518.