Papanasam also spelt as Pavanasam is a famous picnic spot in Tirunelveli district in the Indian state of Tamil Nadu. It falls under the Ambasamudram Taluk. It is situated 60 kilometres (37 mi) from Tirunelveli. The site features tourist attractions like Thamirabarani River, Agasthiyar Falls, Siva Temple, and Papanasam dam and hydroelectric power plant.