Seppa is the headquarters of the East Kameng district in the state of Arunachal Pradesh in India. Sapla means 'marshy' land in the local dialect. It lies on the bank of Kameng River and there is a helipad there. It is located 160 kilometres from Itanagar and 213 kilometres from Tezpur connected by motorable road. The village of Seppa has two out of the sixty Vidhan Sabha Constituencies of Arunachal Pradesh. They are Seppa East and Seppa West.