Trentham is a town in the Shire of Hepburn and Shire of Moorabool local government area of West Central Victoria, Australia. At the 2016 census, Trentham had a population of 1,180, with a median age of 55 years. Located at an altitude of 700 metres (2,297 ft), the town is 87 kilometres (54 mi) north-west of Melbourne. The Trentham area is located on the traditional lands of the Dja Dja Wurrung Aboriginal people.