The Bay Island least gecko (Sphaerodactylus rosaurae ) is a species of lizard in the family Sphaerodactylidae. The species is endemic to the Bay Islands in Honduras.
The specific name, rosaurae, refers to Lord Moyne's yacht Rosaura, from which the holotype was collected.
The preferred habitat of S. rosaurae is forest at altitudes of 0–20 m (0–66 ft).
S. rosaurae is oviparous.
