David McKenzie (born 6 August 1974) is an Australian former racing cyclist. He won the Australian national road race title in 1998. McKenzie's biggest victory came on stage 7 of the 2000 Giro d'Italia where he rode to victory after a 164 km solo breakaway. McKenzie won the Goulburn to Sydney Classic in 2005. He now works as a cycling journalist and commentator for Australian broadcaster SBS. He has been involved with the UCI Continental teams Black Spoke Pro Cycling Academy and EuroCyclingTrips - CMI Pro Cycling.