Boulton's Namib day gecko (Rhoptropus boultoni), also known commonly as Boulton's slender gecko, is a species of lizard in the family Gekkonidae.

The specific name, boultoni, is in honor of American ornithologist Wolfrid Rudyerd Boulton.

[2] R. boultoni is found in Angola, Namibia, and South Africa.

[3] The preferred natural habitat of R. boultoni is rocky areas of savanna, at altitudes of 50–1,300 m (160–4,270 ft).

[1] Dorsally, R. boultoni is olive-brown to dark grey, mottled with maroon.