Trinity Beach is a suburb of Cairns in the Cairns Region, Queensland, Australia. Trinity Beach is approximately 20 kilometres (10 mi) from the Cairns city centre. Trinity Beach is also a beach stretching for about a mile on the eastern coast of Australia bounded by the Coral Sea. The suburb itself is approximately 1 and a half miles wide.
At the time of the 2011 census, Trinity Beach had a population of 4,734.