The Elmenteita agama or Elmenteita rock agama (Agama caudospinosa) is a species of lizard from the family Agamidae. The species is endemic to Kenya with the type locality being Lake Elmenteita, hence the common name.
The males are predominantly grey, reaching lengths of . They are spiny with relatively wide tails. When "in display", the males show various shades of orange or red around their necks, chins, and chests. Females are smaller and mottled brown with a vertical line of pale spots.[1]