Ivo Harrington Whitton (9 December 1893 – 2 July 1967) was an Australian amateur golfer, who, along with Greg Norman, is the only Australian to have won the Australian Open five times (1912, 1913, 1926, 1929 and 1931). Whitton was born in Moonee Ponds, Victoria, his father Percy Whitton was a senior public servant. In 1912, Whitton won his first Australian Open championship, and went on to win four more in 1913, 1926, 1929 and 1931. He also won the Australian Amateur twice, the Victorian Amateur Championship five times, the New South Wales Amateur and the Queensland Amateur and Open.