| Medal record | ||
|---|---|---|
| Men's slalom canoeing | ||
| World Championships | ||
| Silver | 1999 La Seu d'Urgell | C-2 team |
| Silver | 2005 Penrith | C-2 |
| Bronze | 2006 Prague | C-2 team |
Marián Olejník is a Slovakian slalom canoer who competed in the 1990s and 2000s. He won three medals at the ICF Canoe Slalom World Championships with two silvers (C-2: 2005, C-2 team: 1999) and a bronze (C-2 team: 2006).