Buada Lagoon is a landlocked, slightly brackish, freshwater lake on the island Nauru.
It is about 5 metres above sea-level. The Lake is located in the southwest of the Island in the district of Buada. The fertile land around the Lake is farmed.
Although tourism is not highly developed in Nauru, Buada Lagoon is one of the most popular locations in the country for tourists to visit. Unlike in many areas of Nauru, trees are in relative abundance in the vicinity of Buada Lagoon.