| Birth Place: | Gummersbach, Germany |
| Height: | 1.81m (05.94feet) |
| Weight: | 67kg (148lb) |
| Sport: | Athletics |
| Event: | High jump |
| Club: | LAC Südstadt ULC Wildschek |
| Pb: | 1.93 m (1972) |
| Show-Medals: | yes |
Ilona Maria Gusenbauer (née Majdan on 16 September 1947) is a retired Austrian high jumper. She competed at the 1968 and 1972 Olympics and finished in eighth and third place, respectively. She held the world record for more than a year starting in 1971, and was the Austrian champion in 1966–1973, 1975 and 1976.