Eirías (Spanish: Herías or Santa María de Herías) is one of five parishes in the municipality of Illano in Asturias, Spain.

It is 25.65 km2 (9.90 sq mi) in size.

The population is 15 (Padron Municipal de Illano, 2007).

The Capilla (chapel) de Eirías is linked to the López Castrillón.

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