| Election Name: | 2004 Baton Rouge mayoral election |
| Flag Image: | Flag of Baton Rouge, Louisiana.svg |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2000 Baton Rouge mayoral election |
| Previous Year: | 2000 |
| Election Date: | September 18, 2004 (first round) November 2, 2004 (runoff) |
| Next Election: | 2008 Baton Rouge mayoral election |
| Next Year: | 2008 |
| 1Blank: | First round |
| 2Blank: | Runoff |
| Candidate1: | Kip Holden |
| 1Data1: | 39,470 35.05% |
| 2Data1: | 94,802 53.88% |
| Candidate2: | Bobby Ray Simpson |
| Party2: | Republican Party (United States) |
| 1Data2: | 38,206 33.93% |
| 2Data2: | 81,142 46.12% |
| Candidate3: | William Daniel |
| Party3: | Democratic Party (United States) |
| 1Data3: | 27,662 24.57% |
| 2Data3: | Eliminated |
| Mayor | |
| Before Election: | Bobby Ray Simpson |
| Before Party: | Republican Party (United States) |
| After Election: | Kip Holden |
| After Party: | Democratic Party (United States) |
| Party1: | Democratic Party (United States) |
The 2004 Baton Rouge mayoral election was held on September 18 and November 2, 2004, to elect the mayor-president of Baton Rouge, Louisiana. It saw Democrat Kip Holden unseat Incumbent Republican Mayor Bobby Ray Simpson.