| Fullname: | Jefferson Cardoso dos Santos |
| Birth Date: | 15 February 1986 |
| Birth Place: | São Vicente, São Paulo, Brazil |
| Position: | Left defender |
| Youthyears1: | 2006 |
| Youthclubs1: | São Vicente Atlético Clube |
| Youthyears2: | 2007–2008 |
| Youthclubs2: | Jabaquara Atlético Clube |
| Years1: | 2009–2011 |
| Clubs1: | Red Bull Brasil |
| Caps1: | 78 |
| Goals1: | 4 |
| Years2: | 2011–2012 |
| Caps2: | 8 |
| Goals2: | 0 |
| Years3: | 2012 |
| Clubs3: | Ituano |
| Caps3: | 0 |
| Goals3: | 0 |
| Years4: | 2012 |
| Caps4: | 5 |
| Goals4: | 0 |
| Years5: | 2013 |
| Clubs5: | Brasiliense |
| Caps5: | 2 |
| Goals5: | 0 |
| Years6: | 2014– |
| Clubs6: | Guarani |
| Pcupdate: | August 14, 2014 |
Jefferson Cardoso dos Santos (born February 15, 1986) is a Brazilian footballer who plays for Guarani in the Campeonato Brasileiro Série C.[1]