Eupithecia vallenarensis is a moth in the Geometridae family. It is found in the regions of Atacama (Huasco Province), Coquimbo (Limari Province), Santiago (Santiago Province), Maule (Linares Province) and Biobio (Biobio Province) in Chile. The habitat consists of the Intermediate Desert, Coquimban Desert, Central Valley and Northern Valdivian Forest biotic provinces.