Bradford Paul Cooper is an Australian former freestyle and backstroke swimmer of the 1970s, who won a gold medal in the 400 m freestyle at the 1972 Summer Olympics. In that race he originally finished second by the smallest margin ever to decide an Olympic swimming final, but was later awarded the gold medal after the victor, American Rick DeMont, an asthmatic, was disqualified after his post-race urinalysis tested positive for traces of the banned substance ephedrine contained in his prescription asthma medication, Marax.

Mark Lyndon Tonelli, whose birth name was Mark Lyndon Leembruggen, is an Australian former backstroke, butterfly, and freestyle swimmer of the 1970s and 1980s, who won a gold in the 4×100-metre medley relay at the 1980 Moscow Olympics as a makeshift butterfly swimmer in the self-named Quietly Confident Quartet. Tonelli unofficially led the relay team and was an athletes' spokesperson who fought for the right of Australian Olympians to compete in the face of a government call for a boycott to protest against the Soviet invasion of Afghanistan.