Piccadilly is a small town in the Adelaide Hills of South Australia, Australia. At the 2006 census, Piccadilly had a population of 509.
The Piccadilly Valley was for many decades a market gardening centre which produced food for the Adelaide and overseas market. A large part of the valley is now used for growing premium 'cool climate' grape varieties.
Piccadilly is home to the Woodhouse Scout Centre, which in addition to scout jamborees hosts school camps and various outdoor activities.