| Election Name: | 2004 United States Senate election in Vermont |
| Country: | Vermont |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1998 United States Senate election in Vermont |
| Previous Year: | 1998 |
| Next Election: | 2010 United States Senate election in Vermont |
| Next Year: | 2010 |
| Election Date: | November 2, 2004 |
| Image1: | File:Patrick Leahy 113th Congress.jpg |
| Nominee1: | Patrick Leahy |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 216,972 |
| Percentage1: | 70.63% |
| Nominee2: | Jack McMullen |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 75,398 |
| Percentage2: | 24.54% |
| U.S. Senator | |
| Before Election: | Patrick Leahy |
| Before Party: | Democratic Party (United States) |
| After Election: | Patrick Leahy |
| After Party: | Democratic Party (United States) |
The 2004 United States Senate election in Vermont was held on November 2, 2004. Incumbent Democratic U.S. Senator Patrick Leahy won reelection to a sixth term.