Kathryn Mitchell (born 10 July 1982) is an Australian track and field athlete who competes in the javelin throw. She has represented her country at three Olympic Games, finishing ninth in 2012 and sixth in 2016. She won gold at the 2018 Commonwealth Games with a throw of 68.92 m, a Commonwealth Games, Australian and Oceanian record. It also ranks her ninth on the world all-time list.