Timothy Quentin Lowndes (born 28 September 1979 in Lilydale, Victoria) is an Australian sport shooter. He has competed for Australia in rifle shooting at two Olympics (2000 and 2004), and has been close to an Olympic final in 2004, finishing twelfth in the rifle three positions. Apart from his Olympic career, Lowndes has won a total of seven medals in a major international competition, spanning two editions of the Commonwealth Games (1998 and 2002), and the Oceanian Championships. Throughout his sporting career, Lowndes trains full-time under Yugoslav-born head coach and 1976 Olympian Miroslav Šipek of the national team, while he shoots at Townsville Smallbore Rifle Club on the outskirts of Melbourne.