The Peruvian Sheartail (Thaumastura cora) is a species of hummingbird in the Trochilidae family. It is found in Peru west of the Andes and has been recorded in Ecuador. It has spread into northernmost Chile in recent decades. Its natural habitats are subtropical or tropical dry shrubland, subtropical or tropical moist shrubland, subtropical or tropical high-altitude shrubland, and heavily degraded former forest.