Gravilias is a district of the Desamparados canton, in the San José province of Costa Rica.
The district's name comes from the Grevillea robusta species of tree, widely used to provide shadow to coffee plantations.
Gravilias was created on 23 November 1992 by Decreto Ejecutivo 21752-G.
Gravilias has an area of km<sup>2</sup> and an elevation of metres.
For the 2011 census, Gravilias had a population of inhabitants.