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| Time | Date | Name | Team | Meet |
|---|---|---|---|---|
| 46.63 | Sept. 23, 2022 | Leon Marchand | Arizona State University | AZ Maroon & Gold -- Intrasquad |
| 47.23 | Dec. 2, 2020 | Christopher Staka | University of Texas | Texas vs. Texas Christian |
| 48.52 | Nov. 22, 2015 | Iegor Lytvenok | Grand Canyon University | Northwestern TYR Invitational |
| 49.13 | March 25, 2014 | Ivan Nechunaev | Grand Canyon University | CSCAA Collegiate Classic |
| 49.64 | March 1, 2014 | Ivan Nechunaev | Grand Canyon University | Western Athletic Conference Championships |
| 49.79 | July 28, 2012 | Michael Baric | University of North Carolina, Wilmington | NC RSA July Invite Meet |
| 50.28 | Nov. 11, 2009 | Martin Liivamagi | University of California-Berkeley | Triple Distance Meet |
| 50.97 | Oct. 10, 2009 | Roko Simunic | Missouri State University | Show-Me Showdown |
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