Mathew Hayman (born 20 April 1978) is an Australian former professional road bicycle racer, who rode professionally between 2000 and 2019 for the Rabobank, Team Sky and Mitchelton–Scott teams. During his career, Hayman was an experienced and respected domestique, as he typically took on a supporting role within his team. Hayman was also a specialist in the cobbled classics, and was the winner of Paris–Roubaix in 2016. Following his retirement from racing after the 2019 Tour Down Under, Hayman remained with the Mitchelton–Scott team as a part-time directeur sportif alongside a "special projects" position.