| Election Name: | 1901 Caversham by-election |
| Country: | New Zealand |
| Flag Year: | 1901 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1899 New Zealand general election |
| Previous Year: | 1899 general |
| Next Election: | 1902 New Zealand general election |
| Next Year: | 1902 general |
| Turnout: | 4,553 |
| Candidate1: | Thomas Sidey |
| Party1: | New Zealand Liberal Party |
| Popular Vote1: | 1,620 |
| Percentage1: | 35.58 |
| Candidate2: | William Earnshaw |
| Party2: | Liberal–Labour (New Zealand) |
| Popular Vote2: | 1,515 |
| Percentage2: | 33.27 |
| Candidate3: | Patrick Hally |
| Color3: | FF0033 |
| Party3: | Labour |
| Popular Vote3: | 1,120 |
| Percentage3: | 24.59 |
| Member | |
| Before Election: | Arthur Morrison |
| After Election: | Thomas Sidey |
| Before Party: | New Zealand Liberal Party |
| After Party: | New Zealand Liberal Party |
The 1901 Caversham by-election was a by-election in the New Zealand electorate of Caversham, an urban seat in Dunedin at the south-east of the South Island.
The by-election was held on 19 December 1901, and was precipitated by the death of sitting MP, Arthur Morrison. The seat was won by fellow Liberal Thomas Sidey.
There was a large crowd at the declaration of the results, the crowd was rather rowdy and many rotten eggs were thrown at runner-up William Earnshaw.
The following table gives the election results: