The purple frog (Nasikabatrachus sahyadrensis) is a frog species belonging to the family Sooglossidae. It can be found in the Western Ghats in India. Names in English that have been used for this species are purple frog, Indian purple frog, or pignose frog. Although the adult frog was formally described in October 2003, the taxon was recognized much earlier by its tadpole, which had been described in 1918.