Tantanoola (postcode 5280) is a town in South Australia. The name is derived from the aboriginal word tentunola, which means boxwood / brushwood hill or camp. Tantanoola was originally named 'Lucieton' by Governor Jervois after his daughter Lucy Caroline, on 10 July 1879. It was changed by Governor Robinson to 'Tantanoola' on 4 October 1888. At the 2006 census, Tantanoola had a population of 255.
Tantanoola is in the Wattle Range Council local government area, the South Australian House of Assembly electoral districts of MacKillop and Mount Gambier, and the Australian House of Representatives Division of Barker.