| Election Name: | 1904 Wellington City mayoral election |
| Country: | New Zealand |
| Flag Image: | Wellington Coat Of Arms.svg |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1903 Wellington City mayoral election |
| Previous Year: | 1903 |
| Next Election: | 1905 Wellington City mayoral election |
| Next Year: | 1905 |
| Election Date: | 27 April 1904 |
| Turnout: | 6,147 (44.96%) |
| Candidate1: | John Aitken |
| Party1: | Independent politician |
| Popular Vote1: | 3,052 |
| Percentage1: | 49.65 |
| Candidate2: | Thomas Wilford |
| Party2: | Independent politician |
| Popular Vote2: | 1,565 |
| Percentage2: | 25.45 |
| Candidate3: | Thomas William Hislop |
| Party3: | Independent politician |
| Popular Vote3: | 1,530 |
| Percentage3: | 24.89 |
| Mayor | |
| Before Election: | John Aitken |
| After Election: | John Aitken |
The 1904 Wellington City mayoral election was part of the New Zealand local elections held that same year. The polling was conducted using the standard first-past-the-post electoral method.
In 1904 John Aitken, the incumbent Mayor, was re-elected to office as Mayor of Wellington, beating challenges from both Thomas Wilford and Thomas William Hislop.
The following table gives the election results: