The Chilean woodstar (Eulidia yarrellii) is a small bird in the hummingbird family, Trochilidae. It is restricted to northernmost Chile with reports from southern Peru. Its natural habitats are dry shrubland and rural gardens. It is threatened by habitat loss and is classed as a Critically endangered species. It is usually classified in its own genus Eulidia but is sometimes placed with the purple-collared woodstar in the genus Myrtis. In 2013 it was classed as Endangered but recently, it was classed as Critically Endangered by the IUCN Red List.