Chaz Mostert (born 10 April 1992) is an Australian professional racing driver competing in the Repco Supercars Championship. He currently drives the No. 25 Holden ZB Commodore for Walkinshaw Andretti United. Mostert was the winner of the 2021 Bathurst 1000 with Lee Holdsworth and has also previously won the 2014 Bathurst 1000 with Paul Morris and the 2010 Australian Formula Ford Championship.
Mostert's V8 Supercars debut was at the Perth 360 at Barbagallo Raceway for Dick Johnson Racing, replacing Jonny Reid in the seat. As part of the deal, Ford Performance Racing provided additional technical support to the team and retained a long-term deal with Mostert. On 28 July 2013, at only his fifth championship event, Mostert won his first race at the Ipswich 360 at Queensland Raceway