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|Date of birth||13 January 1983|
|Place of birth||Lindenfels, West Germany|
|Height||1.82 m (6 ft 0 in)|
|1996–1998||FC 07 Bensheim|
|2004||→ Dundee (loan)||11||(1)|
|2004–2005||→ Westerlo (loan)||10||(0)|
|2009–2013||1. FC Schweinfurt 05||94||(16)|
|* Senior club appearances and goals counted for the domestic league only|
After beginning as a youth player in Germany with KSG Mitlechtern, FC 07 Bensheim and Eintracht Frankfurt, Kneißl signed for English side Chelsea in 2000. He stayed with Chelsea for five years, and although he did not make any league appearances, he spent loan spells in Scotland with Dundee, where he played in 11 league games, scoring one goal, and in Belgium with Westerlo. After leaving Chelsea in 2005 he played for German clubs SV Wacker Burghausen and Fortuna Düsseldorf, before returning to England with AFC Wimbledon in September 2007, where he made one league appearance before leaving in October 2007. He signed for Wivenhoe Town in December 2007, but left after just one league appearance. He next signed for SpVgg Weiden in July 2008, before moving to 1. FC Schweinfurt 05 in January 2009 on another free transfer.
- "CHELSEA : 1946/47 - 2007/08". Post War English & Scottish Football League A - Z Player's Transfer Database. Retrieved 11 March 2012.
- "DUNDEE : 1946/47 - 2007/08". Post War English & Scottish Football League A - Z Player's Transfer Database. Retrieved 11 March 2012.
- "Player Profile". AFC Wimbledon. Archived from the original on 24 February 2012. Retrieved 29 December 2011.
- "Sebastian Kneißl (Sturm)" (in German). 1. FC Schweinfurt 05. Archived from the original on 17 July 2011.
- Kneißls Überraschungscomeback in der BZL (in German) fupa.net, published: 8 July 2015, accessed: 9 July 2015
- "12th FIFA World Youth Championship" (PDF). de.fifa.com. Retrieved 10 August 2017.
- "Torres sparkles for Spain". UEFA.com. Union of European Football Associations. Retrieved 10 August 2017.
- "Squad U19 EURO 2002 Norway". www.worldfootball.net. Retrieved 10 August 2017.