Isao Aoki (born 31 August 1942) is one of Japan's most successful golfers. He was elected to the World Golf Hall of Fame in 2004. Aoki was born in Abiko, Chiba, Japan. He was introduced to golf while caddying at the Abiko Golf Club as a schoolboy. He turned professional in 1964. He went on to win more than fifty events on the Japan Golf Tour between 1972 and 1990, trailing only Masashi "Jumbo" Ozaki on the golfers with most Japan Golf Tour wins list. He won the Japan Golf Tour money list five times in six years: 1976, 1978, 1979, 1980, and 1981. His career earnings are 980 million yen.