| Marx Santos | |
| Fullname: | Marx Freud Santos Ferraz |
| Birth Date: | 9 May 1988 |
| Birth Place: | Goiânia, Brazil |
| Position: | Defender |
| Currentclub: | Caldense |
| Youthyears1: | –2007 |
| Youthclubs1: | Palmeiras |
| Years1: | 2007 |
| Years2: | 2007–2008 |
| Years3: | 2008 |
| Years4: | 2009 |
| Years5: | 2009–2010 |
| Years6: | 2010 |
| Years7: | 2010 |
| Years8: | 2011 |
| Years9: | 2012 |
| Years10: | 2012 |
| Years11: | 2012–2013 |
| Years12: | 2013 |
| Years13: | 2013–2014 |
| Years14: | 2014 |
| Years15: | 2014 |
| Years16: | 2014–2015 |
| Years17: | 2015–2016 |
| Years18: | 2016– |
| Clubs2: | SønderjyskE |
| Clubs3: | São Carlos |
| Clubs4: | Inhumas |
| Clubs5: | Funorte |
| Clubs6: | →Morrinhos (loan) |
| Clubs7: | Vila Nova |
| Clubs8: | Ituano |
| Clubs9: | América (RN) |
| Clubs10: | Boa Esporte |
| Clubs11: | Ituano |
| Clubs12: | Santa Cruz |
| Clubs13: | Morrinhos |
| Clubs14: | Guarani (MG) |
| Clubs15: | Rio Verde |
| Clubs16: | Guarani (MG) |
| Clubs17: | Aparecidense |
| Clubs18: | Caldense |
| Caps7: | 6 |
| Goals7: | 0 |
| Caps8: | 8 |
| Goals8: | 0 |
| Caps10: | 2 |
| Goals10: | 0 |
| Caps12: | 9 |
| Goals12: | 0 |
| Caps14: | 6 |
| Goals14: | 0 |
| Caps16: | 8 |
| Goals16: | 0 |
| Pcupdate: | 15 February 2016 |
Marx Freud Santos Ferraz (born 9 May 1988) is a Brazilian football player who currently plays for Caldense as a defender.