Gregory ("Greg") Rogers (born 14 August 1948) was an Australian sprint freestyle swimmer of the 1960s and 1970s, who won a silver and bronze medal in the 4x200m and 4x100m freestyle relays respectively at the 1968 Mexico City Olympics. His brother Neil also competed as an Olympic swimmer.
Hailing from Sydney, Rogers was eliminated in the semifinals of the 100m freestyle, and the heats of the 400m event. He then combined with Michael Wenden, Bob Windle and Robert Cusack to win bronze in the 4x100m freestyle relay behind the United States and the Soviet Union. In the 4x200m freestyle relay, he combined with Wenden, Windle and Graham White to claim silver, half a bodylength behind the Americans.
At the 1970 Commonwealth Games in Edinburgh, Rogers combined with his brother Neil to claim gold in both the 4x100m and 4x200m freestyle relays. Individually he claimed silver and bronze in the 100m and 200m events respectively. Continuing to the 1972 Munich Olympics, Rogers had a poor end to his career, being eliminated in the semifinals of the 100m freestyle.
He and his brother Neil Rogers both appeared nude on the 1974 August issue in the centre fold pages of Playgirl magazine.