| Election Name: | 1908 Tuapeka by-election |
| Country: | New Zealand |
| Flag Year: | 1908 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1905 New Zealand general election |
| Previous Year: | 1905 general |
| Next Election: | 1908 New Zealand general election |
| Next Year: | 1908 general |
| Turnout: | 2,966 |
| Candidate1: | William Chapple |
| Party1: | Independent Liberal |
| Color1: | FFDD00 |
| Popular Vote1: | 1,075 |
| Percentage1: | 36.24 |
| Candidate2: | James Horn |
| Party2: | New Zealand Liberal Party |
| Popular Vote2: | 1,045 |
| Percentage2: | 35.23 |
| Candidate3: | Robert Scott |
| Party3: | Conservative (New Zealand) |
| Popular Vote3: | 846 |
| Percentage3: | 28.52 |
| Member | |
| Before Election: | James Bennet |
| After Election: | William Chapple |
| Before Party: | New Zealand Liberal Party |
| After Party: | Independent Liberal |
The Tuapeka by-election was a by-election in the New Zealand electorate of Tuapeka, a rural seat at the bottom of the South Island.
The by-election was held on 5 June 1908, and was precipitated by the death of sitting Liberal member of parliament James Bennet. The election was won by William Chapple who stood as an independent Liberal.
The following table gives the election results: