Island Hermitage on (Polgasduwa) Dodanduwa Island, Galle District, Sri Lanka is a famous Buddhist forest monastery founded by Ven Nyanatiloka Mahathera in 1911. It is a secluded place for Buddhist monks to study and meditate in the Buddhist tradition, and it contains an English and German library.

Ven. Nyanatiloka Mahathera, born as Anton Walther Florus Gueth, was one of the earliest Westerners in modern times to become a Bhikkhu, a fully ordained Buddhist monk.