The carcass of the adult male rhino with its horn intact was found in Barakata area under Bagori range of the Park.
Forest officials said the rhino was suspected to have died a natural death about three days ago.
In another incident, an elephant, which had triggered panic in Deopani area of the same range in the Park, was found dead today with injury marks on its body.
The elephant was said to be in a state of 'musth' and could have perished due to conflict with other animals or killed by poachers, the officials added.