| Sebastián Calleja | |
| Full Name: | Sebastián Mariano Calleja |
| Birth Date: | February 2, 1979 |
| Birth Place: | Buenos Aires, Argentina |
| Height: | 1.82 m |
| Position: | Midfielder |
| Years1: | 1996-1998 |
| Clubs1: | Argentinos Juniors |
| Years2: | 1999-2000 |
| Clubs2: | RCD Mallorca B |
| Years3: | 2001 |
| Clubs3: | Bari |
| Years4: | 2001-2002 |
| Clubs4: | Olimpija Ljubljana |
| Years5: | 2003-2004 |
| Clubs5: | Once Caldas |
| Years6: | 2004 |
| Clubs6: | Deportes La Serena |
| Years7: | 2005 |
| Clubs7: | Johor Bahru City |
| Years8: | 2007 |
| Clubs8: | Hispano FC |
Sebastián Mariano Calleja (born February 2, 1979, in Buenos Aires, Argentina) is a former Argentine footballer who played for clubs of Argentina, Chile, Colombia, Honduras, Spain, Italy, Slovenia and Malaysia. He played as a midfielder.
Argentinos Juniors 1996–1998
RCD Mallorca B 1999–2000
Bari 2001
Olimpija Ljubljana 2001–2002
Once Caldas 2003–2004
Johor Bahru City 2005 Once Caldas 2003 (Torneo Apertura Colombian Primera División Championship), 2004 (Copa Libertadores de América)