Brookesia thieli, commonly also known as Domergue's leaf chameleon, is a species of chameleon endemic to eastern Madagascar, with a type locality of Ambodimanga, Andapa.
In the wild, P. polleni inhabits a number of rivers and associated streams in northern Madagascar, including the environs of the town of Andapa, where most individuals exported for the aquarium trade in recent years were collected.
The holotype of this species had been found north-eastern Madagascar 50 km west of Andapa at altitude of 1600m.