| Swimmers & Divers | ||||
|---|---|---|---|---|
| Name | Begin | End | City | State |
| Katie O'Brien | 2013 | 2017 | Davidson | NC |
| Maquala O'Brien | 2011 | 2013 | Chapin | SC |
| Kathy O'Donnell | 1983 | 1984 | ||
| Mary O'Donnell | 1991 | 1992 | ||
| Maura O'Grady | 1982 | 1985 | Chris O'Sullivan | 1989 | 1992 | Brooke Obeck | 2011 | 2013 | Glen Allen | VA | Leslie Och | 1983 | 1984 | Andria Oleszczuk | 2001 | 2001 | Erin Olsen | 1998 | 1998 |
| Lindsey Olson | 2008 | 2012 | Charleston | SC |
| Nicholas Olson | 2007 | 2008 | Charleston | SC |
| Jamie Osborn | 2010 | 2012 | Greenville | SC |
| Soren Ostberg | 1983 | 1984 | ||
| Emma Otten | 2017 | 2018 | Cincinnati | OH | David Ovelson | 2005 | 2008 | Edmonton | ALB | Alexander Overton | 2018 | 2018 | Cedar Rapids | IA | Brittany Oxley | 2014 | 2018 | Folsom | CA |