| Election Name: | 1904 Wilmot by-election |
| Country: | Australia |
| Type: | Parliamentary |
| Ongoing: | no |
| Previous Election: | 1903 Australian federal election |
| Previous Year: | 1903 |
| Election Date: | 2 February 1904 |
| Next Election: | 1906 Australian federal election |
| Next Year: | 1906 |
| Turnout: | 4,704 (29.93%) |
| Registered: | 15,718 |
| Seats For Election: | The Wilmot seat in the House of Representatives |
| Candidate1: | Norman Cameron |
| Image1: | Portrait of Donald Norman Cameron - Swiss Studios (cropped).jpg |
| Party1: | Free Trade Party |
| Popular Vote1: | 2,368 |
| Percentage1: | 52.03% |
| Swing1: | 2.85 |
| Candidate2: | John Cheek |
| Party2: | Protectionist Party |
| Popular Vote2: | 2,183 |
| Percentage2: | 47.97% |
| Swing2: | 2.85 |
| MP | |
| Before Election: | Edward Braddon |
| Before Party: | Free Trade Party |
| After Election: | Norman Cameron |
| After Party: | Free Trade Party |
A by-election was held for the Australian House of Representatives seat of Wilmot in Tasmania on 26 February 1904. This was triggered by the death of former Premier of Tasmania and federal Free Trade Party MP Sir Edward Braddon on 2 February 1904.
The by-election was won by Free Trade candidate Norman Cameron (a former member of the Tasmanian House of Assembly, and who had represented Tasmania in the Australian House of Representatives until he was voted out in the 1903 federal election), against John Cheek for the Protectionist Party. Voting was not compulsory in 1904.[1]