| Name | Time | Date | Meet |
|---|---|---|---|
| Joseph Gurski | 46.24 | March 1, 2024 | Ivy League Championships (M) |
| Joseph Gurski | 46.79 | Jan. 27, 2024 | Cornell vs Brown Men |
| Jack Mahoney | 47.11 | March 1, 2019 | Ivy League Championships (M) |
| Mike Smit | 47.79 | Feb. 24, 2007 | 2007 EISL Championships |
| Daniel Diette | 48.79 | March 3, 2005 | 2005 EISL Championships |
| Doug Ernst | 49.92 | March 4, 2004 | 2004 Men's EISL Championships |
| Forrest Kennedy | 50.98 | Feb. 28, 2002 | 2002 Men's EISL Championships |
