Pratap Karn (c.1451-c.1469) was Nagvanshi king in 15th century.
According to Nag vanshavali written by Beniram Mahata, during reign of Pratap Karn, king of Sandhya, Tamar, ghatwar kings rebelled.
Pratap Karn sought help of chief Baghdeo of Khayaragarh.
Baghdeo was made Fauzdar of Karra Pargana and he suppressed the rebellion in Tamar.
For this help Pratap Karn declared Baghdeo as King of Karnpura which gives rise to Ramgarh Raj.