Geoffrey Robert Marsh is an Australian former cricketer, coach and selector. He played 50 Test matches and 117 One Day Internationals for Australia as an opening batsman. Marsh was a part of the Australian team that won their first world title during the 1987 Cricket World Cup. As the coach of Australia he was in charge when Australia won the 1999 Cricket World Cup in England. He later coached Zimbabwe (2001–2004) and Sri Lanka (2011–12).

The Australia men's national cricket team represents Australia in men's international cricket. As the joint oldest team in Test cricket history, playing in the first ever Test match in 1877, the team also plays One-Day International (ODI) and Twenty20 International (T20I) cricket, participating in both the first ODI, against England in the 1970–71 season and the first T20I, against New Zealand in the 2004–05 season, winning both games. The team draws its players from teams playing in the Australian domestic competitions – the Sheffield Shield, the Australian domestic limited-overs cricket tournament and the Big Bash League. Australia are the current ICC World Test Championship and ICC Cricket World Cup champions. They are regarded as most successful cricket teams in the history of Cricket.