Mitchell Gregory Reginald Austin (born 3 April 1991) is an Australian professional soccer player who plays as a winger and plays for non-league side Daisy Hill FC.

Born in England to an Australian father, Austin began his senior career at Stalybridge Celtic in 2010. Three years later, he joined Cambridge United and, after loans to Lincoln City, Brackley Town and Southport in 2014, Austin moved to Australian side Central Coast Mariners in 2015. He remained in Australia for four more years, playing at Melbourne Victory, Newcastle Jets and Sydney FC. In 2019 Austin moved to Scotland, playing one year for Partick Thistle.