|Date of birth||27 April 1968|
|Place of birth||Hilden, West Germany|
|Height||1.81 m (5 ft 11 in)|
|1999–2000||1. FC Nürnberg||14||(0)|
|1988–1990||West Germany U21||12||(2)|
|* Senior club appearances and goals counted for the domestic league only|
Born in Hilden, North Rhine-Westphalia, Reinhardt played 14 consecutive seasons in the Bundesliga, starting in 1985–86 with Bayer 04 Leverkusen. He made his debut in the competition on 19 April 1986 by playing 17 minutes in a 0–0 away draw against FC Bayern Munich, and scored his first goal on 13 June of the following year in a 1–1 draw at Bayer 05 Uerdingen where he was also sent off.
Reinhardt appeared in 32 official games in the 1987–88 campaign, including eight in the team's victorious run in the UEFA Cup. In the 1991 summer he moved to Borussia Dortmund, where he remained for the next eight years.
Reinhardt contributed with 47 matches to Borussia's back-to-back national championship conquests of 1995 and 1996. He left in January 1999 to 1. FC Nürnberg, featuring sparingly for his new club as it eventually suffered relegation as third from bottom and retiring altogether at the end of the following season.
Reinhardt won seven caps for Germany, during four years. He made his debut on 21 September 1988 in a friendly with the Soviet Union, coming on as a 46th-minute substitute for Hans Pflügler in the 1–0 win in Düsseldorf.
- Bundesliga: 1994–95, 1995–96
- UEFA Champions League: 1996–97
- Intercontinental Cup: 1997
- UEFA Cup: Runner-up 1992–93
- UEFA Super Cup: Runner-up 1997
- DFL-Supercup: 1995
- "Reinhardt, Knut" (in German). kicker. Retrieved 8 April 2012.
- Arnhold, Matthias (21 December 2017). "Knut Reinhardt - Matches and Goals in Bundesliga". RSSSF. Retrieved 21 December 2017.
- Arnhold, Matthias (21 December 2017). "Knut Reinhardt - International Appearances". RSSSF. Retrieved 21 December 2017.
- "Conny Lehmann". Bild (in German). 7 July 2008. Retrieved 20 March 2014.
- "Reinhardt: "Kinder weinen, wenn Sport ausfällt"" [Reinhardt: "When sport fails, children cry"]. Deutsche Welle (in German). 5 May 2013. Retrieved 20 March 2014.
- "Knut Reinhardt kämpft jetzt im Klassenzimmer" [Knut Reinhardt now fights in the classroom]. Die Welt (in German). 31 December 2013. Retrieved 20 March 2014.
- "Deutscher Supercup, 1995, Finale". dfb.de. Retrieved 5 November 2020.