The exhumation from the unmarked common grave will be the most high-profile step yet in Spain's drive to address atrocities committed during that conflict.
Garcia Lorca was Spain's most renowned 20th-century poet. He is believed to have been executed by militia loyal to Gen. Francisco Franco in the early days of the 1936-39 war.
Francisco Espinola, a spokesman for the Justice Ministry in Andalusia, said Monday the exhumation will be in a matter of weeks.
Garcia Lorca's relatives are opposed. The plan will go ahead because relatives of others interred with him want proper burials.