Peter J. Schwendinger (born 27 April 1959 in Dornbirn, Austria) is an Austrian arachnologist.
He graduated from Innsbruck University in 1985, and in 1990 with a PhD, where he studied with Konrad Thaler.
He was a lecturer at Innsbruck University, from 1989 to 1999.
He taught at Chiang Mai University from 1996 to 1997.
He is a curator at the Natural History Museum of Geneva.