The Australian Prototype Series is an Australian motor racing series for competitors smaller-engined (under 3.0 litres of engine capacity) prototype sports cars.

By 2011 the majority of the grid were American style SCCA DSR class Wests.

The field will be split into two classes based on vehicle configuration and engine specification.

Weights, and maximum engine revolutions will be adjusted if deemed necessary throughout the series.

Additionally, a seeded drivers list will be drawn up by CAMS based on past racing history and drivers on that list will have added additional weight.