| Petar Bošnjak | |
| Fullname: | Petar Bošnjak |
| Birth Date: | 1974 6, df=yes |
| Birth Place: | Virovitica, SFR Yugoslavia |
| Height: | 1.780NaN0 |
| Position: | Defender |
| Youthyears1: | 1981–1992 |
| Youthclubs1: | Mladost Ždralovi |
| Years1: | 1992–1993 |
| Clubs1: | Mladost Ždralovi |
| Years2: | 1993–1995 |
| Clubs2: | Bjelovar |
| Years3: | 1995–1998 |
| Clubs3: | Mladost 127 |
| Caps3: | 70 |
| Goals3: | 11 |
| Years4: | 1999–2008 |
| Clubs4: | Slaven Belupo |
| Caps4: | 211 |
| Goals4: | 10 |
| Years5: | 2009–2011 |
| Clubs5: | Mladost Ždralovi |
| Years6: | 2011–2014 |
| Clubs6: | Bilogorac Veliko Trojstvo |
Petar Bošnjak (born 12 June 1974) is a Croatian retired football defender.
He retired from professional football in January 2009, after 10 years in Slaven Belupo, continuing his career in lower-league football clubs of his home county.