Gundary (/ɡʌndərɪ/) is a locality in Goulburn Mulwaree Council in New South Wales, Australia. It is about 20 kilometres (12 mi) southeast of Goulburn on the road to Windellama and 105 kilometres (65 mi) northeast of Canberra. Its land is largely used for grazing, but it includes rural residential. At the 2021 census, it had a population of 306.