Mahaoya (, , ) is a town in the Ampara District, Eastern Province of Sri Lanka. It is located in north-west of Ampara, at the intersection of the Peradeniya-Badulla-Chenkalady Highway (A5) and the Manampitiya - Aralaganwila - Maduru Oya Road (B502).
Mahaoya has hot springs which are located about away from the town, the springs are considered the hottest springs in Sri Lanka.