Willunga is a town south of Adelaide, South Australia in the City of Onkaparinga local government area 47 km from the Adelaide CBD. Sometimes considered a part of the Adelaide metropolitan area, it is located within the famous McLaren Vale wine growing region. At the 2011 census, Willunga had a population of 2,416.
Willunga is connected to the town of McLaren Vale by a cycle path running along a former railway line and is only a short distance from the beaches of Aldinga Bay. Willunga is home to many festivals, including the start and finish of the fourth leg of the Tour Down Under, the Fleurieu Folk Festival, Almond Blossom Festival and Willunga Christmas Tree Festival.