Gracixalus nonggangensis is a species of shrub frog found in southern Guangxi, China, and Cao Bang Province in northern Vietnam.

A population previously thought to be a separate species, as Gracixalus waza, was described from the Ha Lang District in northern Vietnam.

This population was named for the World Association of Zoos and Aquariums (WAZA), to acknowledge their support of amphibian research and conservation in Vietnam[4] and the common name Waza treefrog was suggested for it.

[4][5] As of 2020, scientists consider it a synonym of Gracixalus nonggangensis,[1] and it was renamed Orixalus waza in 2021.

Specimens were found near cave entrances and in valleys surrounded by limestone mountains, with the main habitat in the area being secondary karst forest consisting of hardwoods mixed with shrubs and vines.

Several other karst species have been found in the same area, including the gecko Goniurosaurus luii and the snake Elaphe moellendorffi.