Oasis is a town in Waushara County, Wisconsin, United States. The population was 384 at the 2020 census.
Geography
According to the United States Census Bureau, the town has a total area of 35.3 square miles (91.4 km<sup>2</sup>), of which 35.0 square miles (90.7 km<sup>2</sup>) is land and 0.3 square mile (0.7 km<sup>2</sup>) (0.76%) is water.
Demographics
As of the census