Nagarjun Sagar racer or Sharma's racer (Coluber bholanathi) is a species of colubrid snake, found in peninsular India, in the Eastern Ghats and the Deccan Plateau. It is a diurnal, fast-moving, active snake, living among rock boulders. It feeds on lizards, small mammals, and birds. It is a rather recently described species, that was first discovered in 1976, in the Nagarjuna Sagar Dam by scientists of the Zoological Survey of India.