Mitchell Ross Marsh is an Australian international cricketer. Marsh has represented Australia in all three forms of cricket, making his debut during the 2011-12 season.

Marsh made his debut for the Warriors at the age of 17 in February 2009 in a Ford Ranger Cup game at Bunbury. He became the youngest ever player in an Australian domestic one-day game and Western Australia's youngest debutant for 70 years. In April 2009, he played for Australia's under-19 team against India and was the team captain during the 2010 Under-19 Cricket World Cup. Under his leadership Australia won the tournament, Marsh having a successful tournament scoring 201 runs, including a match winning 97 in the semi-final against Sri Lanka.