Reddyanus ceylonensis is a species of scorpion in the family Buthidae endemic to Sri Lanka.

Male has slightly longer metasomal segments and telson as well as wider pedipalp chela than the female.

Ventrum mesosoma and pedipalps are yellowish brown with a pair of black spots on seventh sternite.

Carapace and pedipalps are yellowish to reddish in color dorsally and laterally with brown to black spots.

In much older individuals, the fourth and fifth metasomal segments are reddish brown to black in color.