Billy Joe Shearsby (born 14 September 1972) is an Australian former track cyclist. He won the team pursuit at the 1993 UCI Track Cycling World Championships in Hamar, Norway, alongside Brett Aitken, Stuart O'Grady and Tim O'Shannessey. It was the first gold medal for Australia in this event. In addition, the team also set a new world record, covering the four kilometers in 4:03.840. In road cycling, he won the Grafton to Inverell Classic in 1992.