| Onat Kazaklı | |
| Birth Date: | 9 May 1993 |
| Birth Place: | Istanbul, Turkey |
| Height: | 1.88 m |
| Sport: | Rowing |
| Club: | Fenerbahçe Rowing |
Onat Kazaklı (born 9 May 1993) is a Turkish rower competing in the single sculls event. He obtained a quota for the 2020 Summer Olympics.
The tall athlete is a member of Fenerbahçe Rowing. He competed at the 2010 Summer Youth Olympics, and the 2019 World Rowing Championships.