| Mirna Deak | |
| Height M: | 1.95 |
| Position: | Center |
| Birth Date: | 2 March 1974 |
| Birth Place: | Brežice, SFR Yugoslavia |
| Nationality: | Croatian |
| Career Start: | 1992 |
| Career End: | 2008 |
| Years1: | 1992–1999 |
| Team1: | Zrinjevac |
| Years2: | 1999–2002 |
| Team2: | Merkur Celje |
| Years3: | 2002–2008 |
| Team3: | Željezničar Sarajevo |
| Years4: | 2008 |
| Team4: | Athlete Celje |
Mirna Deak (born 2 March 1974 in Brežice, SFR Yugoslavia) is a former Croatian female basketball player.[1]