The greater black whipsnake (Demansia papuensis) is a species of venomous snake in the family Elapidae.
D. papuensis has a constant light to dark brown or black colouration, and a tan coloured head with small dark spots. The species is able to reach up to .
The snake is found mainly in the northern parts of Australia (the far north-east of Western Australia, north Northern Territory, and Northern Queensland). It lives in open forests and woodlands.