Dalyston /ˈdælistɒn/ is a seaside town located 125 kilometres (78 mi) south east of Melbourne via the South Gippsland and Bass Highways, in the Bass Coast Shire of Gippsland, Victoria, Australia. Known originally as a train station at Powlett River near Wonthaggi, it is now the location of the Victorian Desalination Plant, and at the 2011 census, it had a population of 606. It's Bass Coast’s fastest-growing suburb, with the 2011 census showing Dalyston’s population more than doubled from 278 residents in 2006 to 606 in 2011.