| Election Name: | 1904 Illinois lieutenant gubernatorial election |
| Country: | Illinois |
| Flag Year: | 1896 |
| Type: | presidential |
| Ongoing: | No |
| Previous Election: | 1900 Illinois lieutenant gubernatorial election |
| Previous Year: | 1900 |
| Next Election: | 1908 Illinois lieutenant gubernatorial election |
| Next Year: | 1908 |
| Image1: | File:Lawrence Yates Sherman (1).jpg |
| Nominee1: | Lawrence Y. Sherman |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 628,774 |
| Percentage1: | 58.88% |
| Nominee2: | Thomas F. Ferns |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 332,134 |
| Percentage2: | 31.10% |
| Image3: | File:3x4.svg |
| Nominee3: | James H. Brower |
| Party3: | Socialist Party of America |
| Popular Vote3: | 62,333 |
| Percentage3: | 5.84% |
| Lieutenant Governor | |
| Before Election: | William Northcott |
| Before Party: | Republican Party (United States) |
| After Election: | Lawrence Y. Sherman |
| After Party: | Republican Party (United States) |
The 1904 Illinois lieutenant gubernatorial election was held on November 8, 1904. It saw the election of Republican nominee Lawrence Y. Sherman, who defeated Democratic nominee Thomas F. Ferns and five other candidates.
The Democratic and Republican nominees were chosen by their respective parties' state conventions.
Following the ballot, Smith withdrew his name and moved that the nomination of Sherman be made unanimous, which was carried.