Thorius schmidti (common name: Schmidt's pigmy salamander) is a species of salamander in the family Plethodontidae. It is endemic to Mexico and only known from the mountains near the village of Zoquitlán in southern Puebla, possibly also from Oaxaca. It is named after Karl Patterson Schmidt, American herpetologist. It is an uncommon leaf-litter species inhabiting dense pine-oak forest at elevations of 2,560–2,760 m (8,400–9,060 ft) asl. It is threatened by habitat loss caused by logging and expanding agriculture and human settlements.