Philip Powell Calvert (January 29, 1871 in Philadelphia, Pennsylvania^[1]– August 23, 1961) was an American entomologist, recognised as a leading authority on the Odonata (dragonfly order).

A long-term teacher and professor at the University of Pennsylvania, he was President of the American Entomological Society 1900-15. He was elected to the American Philosophical Society in 1918.^[2] His 1893 publication Catalogue of the Odonata (dragonflies) of the Vicinity of Philadelphia, with an Introduction to the Study of this Group served as a model for regional insect study and was the first major attempt at a guide to the order. Calvert went on to publish over 300 notes and articles on the Odonata. He was married to botanist Amelia Smith Calvert.

• Works by or about Philip Powell Calvert at the Internet Archive
• Philip Powell Calvert: Student, Teacher, and Odonatologist
• Odonata. Calvert's contribution to the Biologia Centrali-Americana