The Pilbara death adder (Acanthophis wellsi), also known commonly as Wells' death adder, is a species of venomous snake in the family Elapidae.

[2] The species Acanthophis wellsi is endemic to Western Australia.

[3] The specific name, wellsi, is in honor of Australian herpetologist Richard Walter Wells.

[4] Dorsally, A. wellsi is usually brick red, with narrow, close-spaced gray crossbands.

[2] The preferred natural habitats of A. wellsi are grassland, shrubland, and rocky areas.