| Election Name: | 1900 Illinois lieutenant gubernatorial election |
| Country: | Illinois |
| Flag Year: | 1896 |
| Type: | presidential |
| Ongoing: | No |
| Previous Election: | 1896 Illinois lieutenant gubernatorial election |
| Previous Year: | 1896 |
| Next Election: | 1904 Illinois lieutenant gubernatorial election |
| Next Year: | 1904 |
| Image1: | William Northcott (3x4a).png |
| Nominee1: | William Northcott |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 584,717 |
| Percentage1: | 52.06% |
| Nominee2: | Elmer A. Perry |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 509,686 |
| Percentage2: | 45.38% |
| Lieutenant Governor | |
| Before Election: | William Northcott |
| Before Party: | Republican Party (United States) |
| After Election: | William Northcott |
| After Party: | Republican Party (United States) |
The 1900 Illinois lieutenant gubernatorial election was held on November 6, 1900. It saw the reelection of incumbent Republican William Northcott.