| Fullname: | Oliver Petrak |
| Birth Date: | 1991 2, df=yes |
| Birth Place: | Zagreb, Croatia |
| Position: | Defensive midfielder, Central midfielder |
| Currentclub: | Sesvete |
| Clubnumber: | 13 |
| Youthyears1: | 2003-2005 |
| Youthclubs1: | Zagreb |
| Youthyears2: | 2005 |
| Youthclubs2: | Lokomotiva Zagreb |
| Youthyears3: | 2006–2009 |
| Youthclubs3: | Dinamo Zagreb |
| Youthyears4: | 2009–2010 |
| Youthclubs4: | Lokomotiva Zagreb |
| Years1: | 2010–2013 |
| Clubs1: | Lučko |
| Caps1: | 65 |
| Goals1: | 5 |
| Years2: | 2013–2014 |
| Clubs2: | Istra 1961 |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2014 |
| Clubs3: | → Sesvete (loan) |
| Caps3: | 13 |
| Goals3: | 1 |
| Years4: | 2014–2017 |
| Clubs4: | Zrinjski |
| Caps4: | 65 |
| Goals4: | 9 |
| Years5: | 2017 |
| Clubs5: | Ordabasy |
| Caps5: | 8 |
| Goals5: | 0 |
| Years6: | 2018–2019 |
| Caps6: | 42 |
| Goals6: | 0 |
| Years7: | 2019–2022 |
| Clubs7: | Lokomotiva Zagreb |
| Caps7: | 45 |
| Goals7: | 3 |
| Years8: | 2022 |
| Clubs8: | Krško |
| Caps8: | 16 |
| Goals8: | 2 |
| Years9: | 2023 |
| Clubs9: | Croatia Zmijavci |
| Caps9: | 12 |
| Goals9: | 1 |
| Years10: | 2023– |
| Clubs10: | Sesvete |
| Caps10: | 12 |
| Goals10: | 1 |
| Nationalyears1: | 2005 |
| Nationalteam1: | Croatia U14 |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 2007 |
| Nationalteam2: | Croatia U16 |
| Nationalcaps2: | 7 |
| Nationalgoals2: | 0 |
| Club-Update: | 6 February 2024 |
Oliver Petrak (born 6 February 1991) is a Croatian professional footballer who plays for Croatian second tier outfit Sesvete.
Petrak signed for FC Ordabasy in July 2017 on a one-year contract,[1] but left the club at the end of the 2017 season.[2]
On 29 June 2019, he joined Lokomotiva Zagreb.[3]