The northern velvet gecko (Oedura castelnaui) is a species of lizard in the family Diplodactylidae.

[2] The specific name, castelnaui, is in honor of French naturalist Francis de Laporte de Castelnau.

[3] O. castelnaui is found on the Cape York Peninsula, Queensland, Australia.

[2] The preferred natural habitats of O. castelnaui are forest and savanna.

[2] Clutch size is two eggs, which have a parchment-like shell, and hatch in 60 days.