| Jack Mortimer | |
| Constituency Mp: | Grey |
| Parliament: | Australian |
| Predecessor: | Edgar Russell |
| Successor: | Don Jessop |
| Term Start: | 1 June 1963 |
| Term End: | 26 November 1966 |
| Birth Date: | 1912 10, df=yes |
| Birth Place: | Magill, South Australia |
| Death Place: | Port Hedland, Western Australia |
| Nationality: | Australian |
| Spouse: | Melva Winfield Bähr |
| Party: | Australian Labor Party |
| Children: | 2 |
| Occupation: | Waterside worker |
Jack Mortimer (30 October 1912 – 8 February 1973) was an Australian politician. He received a primary education before becoming a farmer in South Australia. He served in the military from 1942 to 1946[1] and returned as a waterside worker in Port Lincoln where he was a branch secretary of the Waterside Workers' Federation.[2] In 1963, he was elected to the Australian House of Representatives as the Labor member for Grey. He held the seat until his defeat in 1966, after which he became a businessman in Port Lincoln. Mortimer died by drowning at Port Hedland in 1973.[3] [4]
Mortimer married Melva Bähr, of Ceduna, in 1939. They had a daughter and a son, and farmed at Karkoo.