Fourth-seeded Dick Savitt defeated Ken McGregor 6–3, 2–6, 6–3, 6–1 in the final to win the men's singles tennis title at the 1951 Australian Championships.
The seeded players are listed below. Dick Savitt is the champion; others show the round in which they were eliminated.
Frank Sedgman (semifinals)
Arthur Larsen (semifinals) Ken McGregor (finalist) Dick Savitt (champion) John Bromwich (quarterfinals) Bill Sidwell (second round) George Worthington (quarterfinals) Adrian Quist (quarterfinals) Don Candy (second round)