The 2011 Commodore Cup National Series is an Australian motor racing series. It is the 18th running of the Commodore Cup and runs on the Shannons Nationals Motor Racing Championships calendar. The series began on 3 April 2011, at Wakefield Park and will end on 6 November 2011, at Phillip Island. For the first time, two two-driver endurance rounds will be held during the season; the traditional Ashley Cooper Memorial round at Winton and a new endurance round at the Bathurst Motor Festival.