| Ivan Opačak | |
| Height Ft: | 6 |
| Height In: | 7 |
| Weight Lbs: | 220 |
| Nationality: | Bosnian / Croatian |
| Birth Date: | 23 April 1980 |
| Birth Place: | Zenica, SR Bosnia and Herzegovina SFR Yugoslavia |
| Career Start: | 1998 |
| Career End: | 2015 |
| Career Position: | Small forward |
| Coach Start: | 2015 |
| Years1: | 1997–1999 |
| Team1: | Čelik Zenica |
| Years2: | 1999–2000 |
| Team2: | SAV Vacallo Basket |
| Years3: | 2000–2002 |
| Team3: | Čelik Zenica |
| Years4: | 2002–2003 |
| Team4: | Široki |
| Years5: | 2003–2004 |
| Team5: | Virtus Ragusa |
| Years6: | 2004 |
| Team6: | Čelik Zenica |
| Years7: | 2004–2005 |
| Team7: | NIS Vojvodina |
| Years8: | 2005–2007 |
| Team8: | Široki |
| Years9: | 2007–2009 |
| Team9: | Murcia |
| Years10: | 2009–2010 |
| Team10: | Cedevita |
| Years11: | 2010–2011 |
| Team11: | Čelik Zenica |
| Years12: | 2011 |
| Team12: | Križevci |
| Years13: | 2011–2012 |
| Team13: | Cedevita |
| Years14: | 2012–2013 |
| Team14: | Turów Zgorzelec |
| Years15: | 2013 |
| Team15: | Čelik Zenica |
| Years16: | 2013–2014 |
| Team16: | Široki |
| Years17: | 2014–2015 |
| Team17: | Čelik Zenica |
| Years18: | 2015 |
| Team18: | OKK Spars Sarajevo |
| Cyears1: | 2015–2018 |
| Cteam1: | OKK Spars Sarajevo (assistant) |
| Cyears2: | 2018 |
| Cteam2: | OKK Spars Sarajevo |
| Highlights: |
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Ivan Opačak (born 23 April 1980) is a Bosnian professional basketball coach and former player.
Opačak played for HKK Široki of the Adriatic League and Bosnian League.[1] He previously played for Turów Zgorzelec.[2]
Opačak was member of the Bosnia and Herzegovina national basketball team at EuroBasket in 1999 and 2001.