| Name | Time | Date | Meet |
|---|---|---|---|
| Cody Bybee | 24.13 | June 28, 2017 | Phillips 66 Summer National Championships |
| Cody Bybee | 25.00 | March 17, 2016 | NCSA Spring Junior National Championship |
| Cody Bybee | 25.65 | March 19, 2015 | NCSA Spring Junior National Championship |
| JK Koehler | 26.73 | July 21, 2009 | Speedo Champions Series - Oxford |
| Erik Dingledine | 28.36 | July 23, 2003 | Speedo Champions Series - Bloomington |
| Erik Dingledine | 30.34 | Aug. 5, 2002 | 2002 NCSA Junior National Championship |
