Udawalawe National Park, National park in Sabaragamuwa Province, Sri Lanka.

Udawalawe National Park is a protected reserve in Sri Lanka featuring grasslands, scrublands, open forests, and a large reservoir that forms the landscape's core. The terrain supports numerous animal species across these connected habitats and water bodies.

The park was established on 30 June 1972 to shelter wildlife displaced by the Udawalawe Reservoir on the Walawe River and to protect the reservoir's catchment. Before designation, the land was worked under chena shifting cultivation, and farmers were gradually removed after the park was declared. The Udawalawe Elephant Transit Home was set up in 1995 for orphaned calves.

The park's name comes from the Walawe River and the reservoir built across it. The Udawalawe Elephant Transit Home, run by the Department of Wildlife Conservation since 1995, rehabilitates orphaned calves and releases them back into the park; nine were freed in 1998 and 2000, and eight more in 2002. Visitors watch feedings from a distance, with no direct contact, to prevent the calves from imprinting on people.

Visitors explore the park by four-wheel-drive vehicle with a tracker, not on foot; the reserve lies 165 km from Colombo. The dry season brings elephants to the reservoir shore, where dead trees still stand in the water. Morning and late-afternoon drives avoid the heat of the day.

The park is home to around 250 Asian elephants, making it one of the best places to observe these animals in their natural setting. Elephant sightings are common, especially near the reservoir where they gather to drink and bathe.