Athletes beginning with U
| Athlete | Sex | First Appearance | Last Appearance | Appearances | Colleges | Race Types |
|---|
| Barry Upton | m | 2004-12-03 | 2010-02-13 | 18 | IUAA,
WIT | 200m,
400m,
400mH,
60mH |
| Samuel Urvoy | m | 2004-12-03 | 2004-12-04 | 1 | UL | 60m |
| Karl Ussher | m | 2000-12-01 | 2000-12-02 | 3 | UCD | 60m,
LJ |