Rhacophorus modestus is a species of frog in the family Rhacophoridae endemic to Sumatra, Indonesia.

Its common name is Boulenger's flying frog.

[2] It is only known from the type series collected from a montane forest on the Mount Kerinci, within the Kerinci Seblat National Park.

Habitat loss is occurring on the lower slopes of the mountain.

This Rhacophoridae article is a stub.