| Birth Date: | 29 January 1984 |
| Birth Place: | Novi Sad, SR Serbia, SFR Yugoslavia |
Igor Erhartić (Serbian Cyrillic: Игор Ерхартић) (born January 29, 1984) is a Serbian swimmer.
Erhartić represented Serbia and Montenegro at the 2004 Summer Olympics. He participated in one single event - the Men's 200 metre freestyle, in which he took 48th place overall among 59 competitors with a time of 1:54.21.