| Full Name: | John Zoltan Sumegi |
| Birth Place: | Orange, New South Wales, Australia |
| Height: | 182 cm |
| Weight: | 86 kg |
| Sport: | Canoe sprint |
| Show-Medals: | yes |
John Zoltan Sumegi (born 27 October 1954) is a retired Australian K-1 500 m flatwater canoeist who competed at the 1976 Summer Olympics, won a silver medal at the 1979 ICF Canoe Sprint World Championships and another at the 1980 Summer Olympics.