| Sebastian Kollar | |
| Fullname: | Sebastian Kollar |
| Birth Date: | 1987 2, df=yes |
| Birth Place: | Switzerland |
| Height: | 1.83 m |
| Position: | Defensive midfielder |
| Youthyears1: | 1993–1998 |
| Youthclubs1: | SC Binningen |
| Youthyears2: | 1998–2003 |
| Youthclubs2: | FC Basel |
| Youthyears3: | 2003–2004 |
| Youthclubs3: | FC Concordia Basel |
| Years1: | 2004–2006 |
| Clubs1: | FC Concordia Basel |
| Caps1: | 19 |
| Goals1: | 0 |
| Years2: | 2006–2007 |
| Clubs2: | FC Zürich |
| Caps2: | 21 |
| Goals2: | 1 |
| Years3: | 2008 |
| Clubs3: | FC Wil |
| Caps3: | 6 |
| Goals3: | 2 |
| Years4: | 2008–2009 |
| Clubs4: | FC St. Gallen |
| Caps4: | 25 |
| Goals4: | 1 |
| Years5: | 2010 |
| Clubs5: | FC Zürich |
| Caps5: | 0 |
| Goals5: | 0 |
| Totalcaps: | 71 |
| Totalgoals: | 4 |
| Nationalyears1: | 2006–2008 |
| Nationalteam1: | Switzerland U-21 |
| Nationalcaps1: | 9 |
| Nationalgoals1: | 0 |
Sebastian Kollar (born 23 February 1987) is a Swiss former professional footballer who played as defensive midfielder. He was part of the 2006–07 Swiss Championship winning team. He moved to FC Wil on 4 April 2008.