Willalooka is a small service town and locality in the Limestone Coast region of South Australia.

Near Willalooka is the Darwent Waterhole, called by the local Aborigines kongal, meaning 'water mallee'.

[8] Joseph Darwent, an American steamship owner who took up several pastoral properties near Willalooka in the 1870s.

[8] Not to be confused with Joseph Darwent (c. 1824 – 20 October 1872), an English accountant, secretary of the Adelaide City and Port Railway Company, then partner in Darwent & Dalwood who contracted for the northernmost section of the Overland Telegraph Line.

(1847 – 10 August 1926), from Sheffield, who had a property near Coonawarra and lived in Penola, where he was a member of the District Council for 35 years and Chairman for 25.