Wasgamuwa National Park is a natural park in Sri Lanka situated in the Matale and Polonnaruwa Districts . It was declared to protect and to make a refuge for the displaced wild animals during the Mahaweli Development Project in 1984 and is one of the four National Parks designated under the Project. Originally it was designated as a nature reserve in 1938, and then in the early 1970s the area was regraded as a strict nature reserve.
Wasgamuwa is one of protected areas where Sri Lankan Elephants can be seen in large herds. It is also one of the Important Bird Areas in Sri Lanka. The name of the Wasgamuwa has derived through the words "Walas Gamuwa". "Walasa" is Sinhala for sloth bear and "Gamuwa" means a wood. The park is situated 225 km away from Colombo.
Ruins of Malagamuwa, Wilmitiya, Dasthota irrigation tanks and Kalinga Yoda Ela canal which are built by Parākramabāhu I remain in the national park. In the past water was irrigated from the Minipe anicut's left bank canal to Parakrama Samudra by Amban ganga which had run through Wasgamuwa.
Yudangana Pitiya has identified as the battleground of the battle between King Elara and King Dutthagamani taken place. A grassland that the Dutthagamani's army supposed to have camped before the battle is known as Kandauru Pitiya. The ruins of Chulangani chaitya which is built by King Mahanaga can be seen in the national park. Its circumference, 966 feet (294 m) is greater than the Ruwanwelisaya's. The artifacts that have been recovered from the bricks of the chaitya include a bowl used by King Sri Vikrama Rajasinha and several bronze statues are now kept in the Yudangana vihara.