The 1981 Australian Grand Prix was a Formula Pacific motor race held at Calder Park Raceway in Victoria, Australia on 8 November 1981.

It was the forty sixth Australian Grand Prix and the first to be restricted to Formula Pacific racing cars.

The race was won by 22-year-old Roberto Moreno by over a lap from Nelson Piquet with Australian Geoff Brabham finishing third.

The top three drivers all drove Ralt RT4's (13 of the 20 starters were in fact driving the 1.6L Ford powered RT4's).

To actually be able to compete in the Grand Prix Moreno needed five endorsements before the race to be able to obtain his FIA Super Licence, the first endorsement coming from Calder Park Clerk of Course Ken Smith.