The 2015 Australian Formula 3 Championship was an Australian motor racing competition for cars constructed in accordance with FIA Formula 3 regulations.[1] It was sanctioned by the Confederation of Australian Motor Sport (CAMS) as a national championship, with Formula 3 Management Pty Ltd appointed as the Category Manager.[1] The Championship began on 27 March at Sandown Raceway and ended on 18 October at Wakefield Park after seven rounds across three states.[2] The title, which was the 15th Australian Formula 3 Championship, was won by Gilmour Racing's Jon Collins by 1 point over Ricky Capo after both were excluded from the final race of the year.
CAMS removed the Gold Star award from the Australian Formula 3 Championship for 2015.[3] The move ended a 58-year tradition, the award being the third oldest continually awarded CAMS title after the Australian Grand Prix and Australian Hillclimb Championship.