Standing's day gecko (Phelsuma standingi) is an arboreal and diurnal species of lizard in the family Gekkonidae.

The species is endemic to southwest Madagascar; it is threatened by illegal collection for the international pet trade and habitat loss.

In many females two endolymphatic chalk sacs, located on each side of the neck, are well-developed, while in males usually they are just barely visible.

[5] P. standingi is restricted to the arid southwest of Madagascar, specifically the region around Andranolaho, Sakaraha and in the Zombitse-Vohibasia National Park.

[7] Strictly an arboreal and diurnal species, P. standingi lives in pairs on trees, spending a lot of time basking in the sun on the highest and well exposed branches.