| Juan Fernández Di Alessio | |
| Full Name: | Juan Ignacio Fernández Di Alessio |
| Birth Date: | 9 September 1975 |
| Birth Place: | Buenos Aires, Argentina |
| Height: | 1.71 m |
| Position: | Midfielder |
| Youthyears1: | 1995–1996 |
| Youthclubs1: | Asociación Atletica Argentinos Juniors |
| Years1: | 1996–2002 |
| Clubs1: | Lanús |
| Caps1: | 150 |
| Goals1: | 10 |
| Years2: | 2002–2003 |
| Clubs2: | Club Olimpo |
| Caps2: | 34 |
| Goals2: | 1 |
| Years3: | 2003–2004 |
| Clubs3: | Arsenal de Sarandí |
| Caps3: | 38 |
| Goals3: | 2 |
| Years4: | 2004 |
| Clubs4: | Institutode Córdoba |
| Caps4: | 18 |
| Goals4: | 0 |
| Years5: | 2005 |
| Clubs5: | Cerro Porteño |
| Caps5: | 26 |
| Goals5: | 0 |
| Years6: | 2006 |
| Clubs6: | Huracán |
| Caps6: | 22 |
| Goals6: | 0 |
| Years7: | 2006–2007 |
| Clubs7: | Quilmes |
| Caps7: | 12 |
| Goals7: | 1 |
| Years8: | 2007 |
| Clubs8: | Sportivo Luqueño |
| Caps8: | 1 |
| Goals8: | 0 |
| Totalcaps: | 301 |
| Totalgoals: | 14 |
Juan Ignacio Fernández Di Alessio (born 9 September 1975) is an Argentine former professional footballer who played as a midfielder for clubs of Argentina and Paraguay.