| Dr Frank Liddell | |
| Constituency Mp: | Hunter |
| Parliament: | Australian |
| Predecessor: | Edmund Barton |
| Successor: | Matthew Charlton |
| Term Start: | 16 December 1903 |
| Term End: | 13 April 1910 |
| Birth Date: | 1862 6, df=yes |
| Birth Place: | Maitland, New South Wales |
| Nationality: | Australian |
| Party: | Free Trade (1903 - 06) Anti-Socialist (1906 - 09) Liberal (1909 - 10) |
| Alma Mater: | University of Edinburgh |
| Occupation: | Doctor |
Frank Liddell (26 June 1862 - 20 October 1939) was an Australian politician. Born in Maitland, New South Wales, he was educated at Sydney Grammar School and subsequently attended the University of Edinburgh. He returned as a doctor to Maitland, and was elected to West Maitland Council. In 1903, he was elected to the Australian House of Representatives as the Free Trade Party member for Hunter, succeeding Prime Minister Edmund Barton, who had retired. He held the seat until 1910, when he was defeated by future Labor leader Matthew Charlton. Liddell subsequently retired from politics and returned to medicine, practicing in Maitland and Hornsby. He died in 1939.[1]