| Country: | Victoria |
| Type: | parliamentary |
| Ongoing: | no |
| Election Date: | 28 July 1951 |
| Vote Type: | Popular |
| Image1: | PercyJoske1958.jpg |
| Candidate1: | Percy Joske |
| Party1: | Liberal Party of Australia |
| Popular Vote1: | 20,337 |
| Percentage1: | 57.0% |
| Swing1: | 6.3pp |
| Candidate2: | Arthur Lewis |
| Party2: | Australian Labor Party |
| Popular Vote2: | 13,279 |
| Percentage2: | 37.2% |
| Swing2: | 0.5pp |
| MP | |
| Before Election: | Thomas White |
| Before Party: | Liberal Party of Australia |
| After Election: | Percy Joske |
| After Party: | Liberal Party of Australia |
| Election Name: | 1951 Balaclava by-election |
| 1Data2: | 40.1% |
| 2Blank: | TPP Swing |
| 2Data1: | 3.4pp |
| 2Data2: | 3.4pp |
| 1Data1: | 59.9% |
| 1Blank: | TPP |
A by-election was held for the Australian House of Representatives seat of Balaclava on 28 July 1951. This was triggered by the resignation of Liberal MP Thomas White, the Air and Civil Aviation Minister, to become Australian High Commissioner to the United Kingdom. A by-election for the seat of Macquarie was held on the same day.
The by-election was won by Liberal candidate Percy Joske.