Wundanyi is a town lying in the Taita Hills of southern Kenya, about 20 km west of Voi and about 4 km northeast of Ngerenyi. It is also the administrative centre for Taita-Taveta District. The town has a population of 4055 (1999 census). Wundanyi is the centre of an agricultural area and the surrounding slopes are highly terraced.
The town is a popular base for hiking, while local attractions include the Ngangao Forest, known for its butterflies, Wesu Rock and the Cave of Skulls. Shomoto Hill, across the valley from Wundanyi was the formal place of execution for the Taita.