The 1977 Australian Tourist Trophy was a motor race staged at the Phillip Island circuit in Victoria, Australia on 13 November 1977.[1] It was open to Group A Sports Cars[2] and was recognized by the Confederation of Australian Motor Sport as an Australian Title.[2] The race, which was the fifteenth Australian Tourist Trophy,[3] was won by Ian Geoghegan of Sydney, driving the Porsche 935 of Laurie O’Neill.[1] It was Geoghegan's third Australian Tourist Trophy victory.[3]