| Country: | Florida |
| Flag Image: | Flag of St. Petersburg, Florida.svg |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2001 St. Petersburg, Florida, mayoral election |
| Previous Year: | 2001 |
| Next Election: | 2009 St. Petersburg, Florida, mayoral election |
| Next Year: | 2009 |
| Election Date: | November 9, 2005 |
| Turnout: | 20.56% |
| Candidate1: | Rick Baker |
| Party1: | Nonpartisan candidate |
| Popular Vote1: | 22,785 |
| Percentage1: | 69.84% |
| Candidate2: | Ed Helm |
| Party2: | Nonpartisan candidate |
| Popular Vote2: | 9,582 |
| Percentage2: | 29.37% |
| Mayor | |
| Before Election: | Rick Baker |
| Before Party: | Republican Party (United States) |
| After Election: | Rick Baker |
| After Party: | Republican Party (United States) |
St. Petersburg, Florida, held an election for mayor on November 9, 2005., this was the last time a Republican was elected Mayor of St. Petersburg.