| Željko Mrvaljević | |
| Birth Date: | 1979 6, df=y |
| Birth Place: | Bar, SFR Yugoslavia |
| Position: | Defender |
| Youthclubs1: | Mornar |
| Years1: | 1997–2001 |
| Years2: | 2001 |
| Years3: | 2002 |
| Years4: | 2002–2003 |
| Years5: | 2003 |
| Years6: | 2003–2004 |
| Years7: | 2004 |
| Years8: | 2004–2005 |
| Years9: | 2005–2007 |
| Years10: | 2007 |
| Years11: | 2008–2009 |
| Years12: | 2009–2010 |
| Years13: | 2012–2014 |
| Years14: | 2014–2015 |
| Clubs1: | Budućnost Podgorica |
| Clubs2: | Beograd |
| Clubs3: | Bokelj |
| Clubs4: | Widzew Łódź |
| Clubs5: | Kujawiak Włocławek |
| Clubs6: | Mogren |
| Clubs7: | Mornar |
| Clubs8: | Kujawiak Włocławek |
| Clubs9: | Zawisza Bydgoszcz (2) |
| Clubs10: | Unia Janikowo |
| Clubs11: | Petrovac |
| Clubs12: | Vllaznia Shkodër |
| Clubs13: | Petrovac |
| Clubs14: | Mornar |
| Caps1: | 21 |
| Goals1: | 1 |
| Caps2: | 9 |
| Goals2: | 1 |
| Caps3: | 8 |
| Goals3: | 0 |
| Caps4: | 1 |
| Goals4: | 0 |
| Caps5: | 9 |
| Goals5: | 0 |
| Caps6: | 4 |
| Goals6: | 0 |
| Caps7: | 5 |
| Goals7: | 0 |
| Caps9: | 33 |
| Goals9: | 2 |
| Caps10: | 24 |
| Goals10: | 2 |
| Caps11: | 27 |
| Goals11: | 2 |
| Caps12: | 22 |
| Goals12: | 2 |
| Caps13: | 38 |
| Goals13: | 2 |
| Caps14: | 25 |
| Goals14: | 0 |
| Manageryears1: | 2019 |
| Managerclubs1: | Petrovac |
Željko Mrvaljević (Cyrillic: Жељко Мрваљевић; born 25 June 1979) is a Montenegrin former professional footballer who played as a defender.
Beside Montenegrin clubs FK Budućnost Podgorica, FK Bokelj, FK Mogren, FK Mornar and OFK Petrovac, he also played in Serbian FK Beograd, Polish Widzew Łódź, Zawisza Bydgoszcz and Zawisza Bydgoszcz, and in Albanian KF Vllaznia Shkodër.
Petrovac