|Dates||8 August 1990 - 15 June 1991|
|Champions||1. FC Kaiserslautern|
1st Bundesliga title
3rd German title
|Relegated||FC St. Pauli|
Bayer 05 Uerdingen
Hertha BSC Berlin
|European Cup||1. FC Kaiserslautern|
|Cup Winners' Cup||SV Werder Bremen|
|UEFA Cup||FC Bayern Munich|
|Goals scored||863 (2.82 per match)|
|Top goalscorer||Roland Wohlfarth (21)|
|Biggest home win||FC Bayern 7-0 Wattenscheid (24 November 1990)|
Stuttgart 7-0 Dortmund (23 February 1991)
|Biggest away win||Frankfurt 0-6 Hamburg (13 April 1991)|
|Highest scoring||Uerdingen 3-7 K'lautern (10 goals) (22 September 1990)|
FC Bayern 7-3 Hertha BSC (10 goals) (25 May 1991)
The 1990-91 Bundesliga was the 28th season of the Bundesliga, the premier football league in West Germany. It began on 8 August 1990 and ended on 15 June 1991.FC Bayern Munich were the defending champions.
With the Reunification of Germany on 3 October 1990, it was the last season that the league was exclusive to teams from the former West Germany before it was opened to teams from the former East Germany.
Every team played two games against each other team, one at home and one away. Teams received two points for a win and one point for a draw. If two or more teams were tied on points, places were determined by goal difference and, if still tied, by goals scored. The team with the most points were crowned champions while the two teams with the fewest points were relegated to 2. Bundesliga. The third-to-last team had to compete in a two-legged relegation/promotion play-off against the third-placed team from 2. Bundesliga.
SV Waldhof Mannheim and FC Homburg were directly relegated to the 2. Bundesliga after finishing in the last two places. They were replaced by Hertha BSC and SG Wattenscheid 09. Relegation/promotion play-off participant VfL Bochum won on aggregate against 1. FC Saarbrücken and thus retained their Bundesliga status.
|Hertha BSC Berlin||Berlin||Olympiastadion||76,000|
|SV Werder Bremen||Bremen||Weserstadion||32,000|
|1. FC Kaiserslautern||Kaiserslautern||Fritz-Walter-Stadion||42,000|
|1. FC Köln||Cologne||Müngersdorfer Stadion||61,000|
|Bayer 04 Leverkusen||Leverkusen||Ulrich-Haberland-Stadion||20,000|
|FC Bayern Munich||Munich||Olympiastadion||70,000|
|1. FC Nürnberg||Nuremberg||Städtisches Stadion||64,238|
|FC St. Pauli||Hamburg||Stadion am Millerntor||18,000|
|Bayer 05 Uerdingen||Krefeld||Grotenburg-Stadion||34,500|
|SG Wattenscheid 09||Bochum||Lohrheidestadion||15,000|
|Pos||Team||Pld||W||D||L||GF||GA||GD||Pts||Qualification or relegation|
|1||1. FC Kaiserslautern (C)||34||19||10||5||72||45||+27||48||Qualification to European Cup first round|
|2||Bayern Munich||34||18||9||7||74||41||+33||45||Qualification to UEFA Cup first round[a]|
|3||Werder Bremen||34||14||14||6||46||29||+17||42||Qualification to Cup Winners' Cup first round|
|4||Eintracht Frankfurt||34||15||10||9||63||40||+23||40||Qualification to UEFA Cup first round[a]|
|7||1. FC Köln||34||13||11||10||50||43||+7||37|
|11||SG Wattenscheid 09||34||9||15||10||42||51||−9||33|
|15||1. FC Nürnberg||34||10||9||15||40||54||−14||29|
|16||FC St. Pauli (R)||34||6||15||13||33||53||−20||27||Qualification to relegation play-offs|
|17||Bayer 05 Uerdingen (R)||34||5||13||16||34||54||−20||23||Relegation to 2. Bundesliga|
|18||Hertha BSC (R)||34||3||8||23||37||84||−47||14|
FC St. Pauli and third-placed 2. Bundesliga team Stuttgarter Kickers had to compete in a two-legged relegation/promotion play-off. After a two-leg series, both teams were tied 2-2 on aggregate, so a deciding third match had to be scheduled. Stuttgarter Kickers won this match and were promoted to the Bundesliga.
|1. FC Kaiserslautern|
|Goalkeepers: Gerald Ehrmann (33); Michael Serr (2).|
Defenders: Marco Haber (28 / 5); Miroslav Kadlec (28 / 2); Markus Kranz (23 / 2); Reinhard Stumpf (21 / 1); Joachim Stadler (13 / 1); Kay Friedmann (13); Roger Lutz (5 / 1).
Manager: Karl-Heinz Feldkamp.
Transferred out during the season: none.