| Name | Time | Date | Meet |
|---|---|---|---|
| Aaron Dies | 48.76 | March 13, 2021 | 2021 Indiana Swimming Senior Championships |
| Joe Radde | 48.90 | Dec. 12, 2020 | MI OLY Winter Invite |
| Sammy Sierra | 50.70 | Nov. 14, 2020 | 2020 IN ELK Skypoint Transit Invitational |
| Kyle Morris | 51.99 | March 12, 2016 | Indiana Senior State Championships |
| Kyle Morris | 51.14 | March 14, 2015 | 2015 Indiana Senior Short Course Championships |
| Joe Casino | 51.72 | March 2, 2012 | 2012 ST TXLA American SC Championships |
| Chris Pfaff | 53.45 | March 13, 2004 | Indiana Senior State |
| Chris Pfaff | 53.56 | March 12, 2004 | Indiana Senior State |
| David O'Tousa | 55.12 | March 14, 2003 | Indiana Senior State |
