This study aimed to determine the most acceptable and effective front-of-pack food labelling system for Australian consumers. Four systems were tested, including two variations of the GDA (Monochrome and Colour-Coded) and two variations of the Traffic Light (TL and TL + Overall Rating. 790 consumers took part in the survey. The TL system was the most effective in assisting consumers to identify healthier foods. Mandatory TL labelling regulations are recommended to assist consumers in making healthy food choices.