| - | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | Y | Z |
| Athlete | Sex | First Appearance | Last Appearance | Appearances | Colleges | Race Types |
|---|---|---|---|---|---|---|
| Paul Zajac | m | 2000-04-14 | 2000-04-15 | 1 | RCSI | 10000m |
| Marcus Zell | m | 2006-02-18 | 2006-02-18 | 1 | UCD | XC |
| Alexander Zschocke | m | 2002-11-16 | 2002-11-16 | 1 | TCD | Road |
| Chris Zuver | m | 2000-04-14 | 2001-04-21 | 5 | RCSI | 35lbWfD, HT, SP |
| Sopella Zvekare | m | 2002-11-16 | 2003-11-22 | 2 | TCD | Road |
| Jessika Zebo | f | 2004-02-06 | 2009-04-25 | 26 | IUAA, UCC | 200m, 400m, 4x100m, 4x200m, 4x400m, 60m, LJ |