Ian Michael Chappell is a former cricketer who played for South Australia and Australia. Known as "Chappelli", he is considered as one of the greatest captains the game has seen. He captained Australia between 1971 and 1975 before taking a central role in the breakaway World Series Cricket organisation. Born into a cricketing family—his grandfather and brother also captained Australia—Chappell made a hesitant start to international cricket playing as a right-hand middle-order batsman and spin bowler. He found his niche when promoted to bat at number three. Chappell's blunt verbal manner led to a series of confrontations with opposition players and cricket administrators; the issue of sledging first arose during his tenure as captain, and he was a driving force behind the professionalisation of Australian cricket in the 1970s. He was the captain of the Australian squad which finished as runners-up at the 1975 Cricket World Cup.

The first of four sons (Ian, Greg, Trevor, Michel) born in Unley, near Adelaide, to Martin and Jeanne (née Richardson), Chappell was steeped in the game from an early age. His father was a noted Adelaide grade cricketer who put a bat in his hands as soon as he could walk and his maternal grandfather was famous all-round sportsman Vic Richardson, who captained Australia at the end of a nineteen-Test career. Chappell was given weekly batting lessons from the age of five, as were younger brothers Greg and Trevor, who both also went on to play for Australia