Maharana Pratap Sagar (Devanagari: महाराणा प्रताप सागर), in India, also known as Pong Reservoir or Pong Dam Lake was created in 1975, by building the highest earthfill dam in India on the Beas River in the wetland zone of the Siwalik Hills of the Kangra district of the state of Himachal Pradesh. Named in the honour of the patriot Maharana Pratap (1572–1597), the reservoir or the lake is a well-known wildlife sanctuary and one of the 25 international wetland sites declared in India by the Ramsar Convention.The reservoir covers an area of 24,529 hectares (60,610 acres), and the wetlands portion is 15,662 hectares (38,700 acres).

The Pong Reservoir and Gobindsagar Reservoir are the two most important fishing reservoirs in the Himalayan foothills of Himachal Pradesh. These reservoirs are the leading sources of fish within the Himalayan states.