Koonya is a rural locality in the local government area (LGA) of Tasman in the South-east LGA region of Tasmania. The locality is about 18 kilometres (11 mi) north-east of the town of Nubeena. The 2016 census has a population of 134 for the state suburb of Koonya. It hosts the annual Koonya Garlic Festival, a "one-day celebration".