Philautus tanu Meegaskumbura, Manamendra-Arachchi, and Pethiyagoda, 2009[2] Sri Lanka petite shrub frog,[1] (Pseudophilautus tanu), is a species of frogs in the family Rhacophoridae, endemic to southwestern Sri Lanka.

This relatively recently described species is only known from two locations in the Galle District, Beraliya and Kanneliya Forest Reserves.

[2] Three adult males in the type series measure 13.5–13.9 mm (0.5–0.5 in) in snout–vent length; females were not reported.

[2] Pseudophilautus tanu occurs in forest-edges in open shrub areas of the lowland wet zone of Sri Lanka, 24–45 m (79–148 ft) above sea level.

[4] Nevertheless, unprotected forest edge areas are under constant pressure from human activities.