| Election Name: | 1938 Invercargill mayoral election |
| Country: | New Zealand |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1935 Invercargill mayoral election |
| Previous Year: | 1935 |
| Next Election: | 1938 Invercargill mayoral by-election |
| Next Year: | 1938 |
| Election Date: | 11 May 1938 |
| Turnout: | 7,728 |
| Candidate1: | John Miller |
| Party1: | Independent politician |
| Popular Vote1: | 6,184 |
| Percentage1: | 80.02 |
| Candidate2: | Gordon Reed |
| Party2: | Independent politician |
| Popular Vote2: | 1,544 |
| Percentage2: | 19.97 |
| Mayor | |
| Before Election: | John Miller |
| After Election: | John Miller |
The 1938 Invercargill 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.
Incumbent mayor John Miller sought a fourth consecutive term, the fifth in total, against deputy mayor Gordon Reed.[1] Miller died on 20 September, resulting in a by-election in October.
Miller and Reed had previously run against one another for Invercargill in the 1935 general election, both losing to William Denham.
The following table gives the election results: