| Ivan Ćosić | |
| Nickname: | Ćoso[1] |
| Nationality: | Croatian |
| Birth Date: | 21 February 1984[2] |
| Birth Place: | Livno, SR Bosnia and Herzegovina |
| Hometown: | Kaštela, Croatia |
| Height: | 2020NaN0 |
| Weight: | 1000NaN0 |
| Spike: | 3300NaN0 |
| Block: | 3430NaN0 |
| Position: | middle blocker |
| Years1: | 2005–2007 |
| Team1: | OK Karlovac[3] |
| Years2: | 2007–2012 |
| Team2: | OK Mladost Marina Kaštela |
| Years3: | 2012–2014 |
| Team3: |  Cambrai VEC |
| Years4: | 2014–2015 |
| Team4: | Arcada Galaţi[4] |
| Years5: | 2015–2017 |
| Team5: | OK Mladost Marina Kaštela |
| Nationalyears: | 2002–2017 |
| Nationalteam: |  Croatia |
| Medaltemplates-Expand: | set to "yes" to auto-expand medaltemplates section |
Ivan Ćosić (born 21 February 1984 in Livno[5]) is a Croatian male volleyball player. He spent most of his career with OK Mladost Marina Kaštela, with whom he won the 2011/12 and 2015/16 national championships.[6] He also played for French Cambrai and Romanian Arcada Galaţi between 2012 and 2015.
Ćosić played with the Croatia men's national volleyball team between 2002 and 2017, participating in eight European Volleyball Championships with them.[3]