The 2012 Formula 3 Australian Drivers' Championship was a CAMS sanctioned national motor racing title with the winner awarded the 2012 CAMS Gold Star award. The 2012 championship was the 56th Australian Drivers' Championship and the eighth to be contested with open wheel racing cars constructed in accordance with FIA Formula 3 regulations. The championship began on 1 March 2012 at the Adelaide Street Circuit and ended on 23 September at Phillip Island Grand Prix Circuit after seven rounds across six different states with three races at each round.
The championship was secured by British driver James Winslow after the penultimate round held at Queensland Raceway. It was Winslow's second championship victory after having won previously in 2008. Winslow, driving for R-Tek Motorsport, won 13 of the 21 races, including five of the seven feature races, over the course of the season, a new record for the Australian Drivers' Championship, eclipsing the 12 wins Rick Kelly took in 2001. Defending champion Chris Gilmour ended the series in second place having won two races. Winslow's team mate Steel Giuliania finished third in the championship with just over half of the points Winslow collected. Jordan Skinner of Team BRM and Hayden Cooper of BF Racing each collected a their debut race victories. The other races wins were collected by John Magro whose partial season campaign with Team BRM ended with winning the Hidden Valley round. Tim Macrow made a brief return to the series he won in 2007, contesting a single round with Astuti Motorsport, winning at Sydney Motorsport Park.
Cooper won the National Class, for cars built between 1999 and 2004, over fellow Queensland and BF Racing team mate Ben Gersekowski. Lochie Marshall finished third.