Ian Ayre is an Australian former tennis player. He was educated at the Anglican Church Grammar School.
Ayre was a contemporary of Frank Sedgman (1927), George Worthington (1928), Don Tregonning (1928), Rex Hartwig (1929), Ken McGregor (1929) and Mervyn Rose (1930). He was on the Australian Davis Cup team in 1951, 1952, and 1953, but never played in a match. In 1953 he reached the 4th round at Wimbledon, losing to Sven Davidson 6-3 6-4 6-4, and the semifinals of the Australian Open, losing to Mervyn Rose 4-6 4-6 6-1 6-4 6-4. Ayre did not win a Grand Slam tournament.
He turned pro in 1955 and subsequently became a coach in Queensland. In 1969 he supervised the Davis Cup team when the captain, Neale Fraser, was temporarily unable to. In 1975 he won the first Veterans' Open Tournament of the Gold Coast and District Tennis Association at Queens Park Tennis Centre.