Peter Cawthorn
| Full name | John W. Peter Cawthorn |
|---|---|
| Country (sports) | AUS |
| Born | 17 February 1931 Melbourne, Australia |
| Died | 1999 (age 68) Melbourne, Australia |
| Turned pro | 1949 (amateur tour) 1953 (pro tour) |
| Retired | 1968 |
| Singles | |
| Career titles | 21 |
| Grand Slam singles results | |
| Australian Open | 2R (1950) |
| Wimbledon | 1R (1951) |
| Wembley Pro | QF (1957, 1958) |
| French Pro | QF (1956) |
| Doubles | |
| Grand Slam doubles results | |
| Wimbledon | 3R (1951) |
| Grand Slam mixed doubles results | |
| Wimbledon | 4R (1952) |
John W. Peter Cawthorn (17 February 1931 – 1999) was an Australian amateur tennis player who later turned professional in 1953. As an amateur he competed at the 1950 Australian Championships and the 1951 Wimbledon Championships. As a professional he was a two time quarter finalist at the Wembley Professional Championships in 1957 and 1958, and a quarter finalist at the French Professional Championship in 1956. He was active from 1949 to 1968 and won 21 career amateur and pro singles titles. He later became a tennis coach.