| Marius Kazlauskas | |
| Fullname: | Marius Kazlauskas |
| Birth Date: | 1 May 1984 |
| Clubnumber: | 33 |
| Youthyears1: | ?–2001 |
| Years1: | 2001–2002 |
| Clubs1: | Atlantas Klaipėda |
| Caps1: | 19 |
| Goals1: | 0 |
| Years2: | 2003 |
| Clubs2: | Dynamo Moscow |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2004 |
| Clubs3: | Ekranas |
| Caps3: | 17 |
| Goals3: | 0 |
| Years4: | 2005 |
| Clubs4: | FK Vilnius |
| Caps4: | 21 |
| Goals4: | 0 |
| Years5: | 2006 |
| Caps5: | 7 |
| Goals5: | 0 |
| Years6: | 2007 |
| Clubs6: | Banga Gargždai |
| Caps6: | 27 |
| Goals6: | 1 |
| Years7: | 2008 |
| Clubs7: | Vėtra |
| Caps7: | 21 |
| Goals7: | 0 |
| Years8: | 2009–2010 |
| Caps8: | 17 |
| Goals8: | 1 |
| Years9: | 2010 |
| Clubs9: | AZAL PFC |
| Caps9: | 0 |
| Goals9: | 0 |
| Years10: | 2011 |
| Clubs10: | Banga Gargždai |
| Caps10: | 24 |
| Goals10: | 1 |
| Years11: | 2012 |
| Clubs11: | REO Vilnius |
| Caps11: | 20 |
| Goals11: | 0 |
| Years12: | 2012–2013 |
| Clubs12: | Turan Tovuz |
| Caps12: | 11 |
| Goals12: | 0 |
| Years13: | 2013– |
| Clubs13: | Atlantas Klaipėda |
| Caps13: | 47 |
| Goals13: | 0 |
| Pcupdate: | 30 July 2014 |
Marius Kazlauskas (born 1 May 1984, in Gargždai) is a Lithuanian football defender who currently plays for Atlantas Klaipėda.