|Date of birth||13 August 1970|
|Place of birth||Bautzen, East Germany|
|Height||1.78 m (5 ft 10 in)|
|Schalke 04 II (assistant)|
|1988–1989||Dynamo Dresden II||12||(1)|
|1989–1990||→ TSG Meißen||7||(0)|
|1990||→ Stahl Riesa (loan)||5||(0)|
|2005–2010||Schalke 04 II|
|2008||Schalke 04 II|
|2010–2011||FC Ingolstadt 04 (assistant)|
|2012–2015||FSV Frankfurt (assistant)|
|2015–2016||TSV 1860 Munich (assistant)|
|2016–||Schalke 04 II (assistant)|
|* Senior club appearances and goals counted for the domestic league only.
Including his youth career, Kmetsch spent 14 years at Dynamo Dresden, winning the double in his last season, with one of his midfield teammates being Matthias Sammer. After the German reunification, he would play with the team four consecutive years in the Bundesliga, his competition debut coming on 14 September 1991, in a 3–0 home win against SG Wattenscheid 09.
After Dynamo's double relegation in 1995, Kmetsch spent three seasons with Hamburger SV, enjoying his best year in 1996–97 – 32 games, four goals – but his team could only rank 13th. He subsequently signed for FC Schalke 04, where he would win two consecutive German Cups, being however mostly a backup player during his seven-year spell.
After no appearances whatsoever from 2003–05 combined, Kmetsch retired, having various spells as coach of Schalke's second team. After being released in early 2010, he held talks with TSV Germania Windeck and Bayer Leverkusen II to join Heiko Scholz's coaching staff.
Kmetsch gained two caps for Germany, his debut coming on 10 September 1997, in a 1998 FIFA World Cup qualifier against Armenia, in Dortmund: at half-time, with the score at 0–0 (eventually 4–0), he was replaced by another debutee, Lars Ricken.
His second and final appearance was made five months later, in a friendly with Oman (another start, in a 2–0 win).
- DDR-Oberliga: 1989–90
- FDGB-Pokal: 1989–90
- DFB-Pokal: 2000–01, 2001–02
- DFB-Ligapokal: runner-up 2001, 2002
- "Sven Kmetsch ist neuer Co-Trainer des FSV Frankfurt" (in German). FSV Frankfurt. 9 January 2012.
- "Sven Kmetsch komplettiert das Löwen-Trainerteam" (in German). fupa.net. 15 October 2016.
- "Sven Kmetsch wird neuer Co-Trainer der U23" (in German). schalke04.de. 21 June 2016.
- "Lernen bei Buyo, Ruhnert wartet auf Magath" (in German). Reviersport. 29 January 2010. Retrieved 10 March 2012.