| Birth Date: | 20 July 1980 |
| Birth Place: | Split, Yugoslavia |
Ivan Mladina (born July 20, 1980, in Split) is a freestyle swimmer from Croatia. Mladina made his Olympic debut for his native country at the 2000 Summer Olympics in Sydney, Australia. There he was eliminated in the qualifying heats of the Men's 100 m Butterfly, as well as in the 4 × 100 m Freestyle Relay. Four years later, when Athens, Greece hosted the Summer Olympics, Malina was once again a member of the Croatian swimming team, alongside Duje Draganja, Mario Delač and Igor Čerenšek, that did not pass the heats in the 4 × 100 m Freestyle Relay.