| John Cockle | |
| Constituency Mp: | Warringah |
| Parliament: | Australian |
| Predecessor: | Francis Bland |
| Successor: | Edward St John |
| Term Start: | 9 December 1961 |
| Term End: | 3 August 1966 |
| Birth Name: | John Simon Cockle |
| Birth Date: | 1908 9, df=yes |
| Birth Place: | Harrington, Cumbria, England |
| Death Place: | Mosman, New South Wales, Australia |
| Nationality: | English Australian |
| Party: | Liberal Party of Australia |
| Occupation: | Secretary, alderman |
John Simon Cockle (29 September 1908 – 3 August 1966) was an Australian politician. Born in Harrington, Cumbria, England, he migrated as a child to Australia, where he attended Sydney Church of England Grammar School. He was secretary of the Australian Steamship Owners' Federation before serving in the military 1941–46 during World War II. He was an alderman on Sydney City Council from 1953 to 1956. In 1961, he was elected to the Australian House of Representatives as the Liberal member for Warringah. He held the seat until his death from a heart attack on 3 August 1966.[1] No by-election was held due to the upcoming federal election.[2]