The 1990–91 Scottish League Cup was the 45th staging of the Scotland's second most prestigious football knockout competition.
The competition was won by Rangers, who defeated Celtic 2–1 in the Final at Hampden Park.
First round Home teamScoreAway teamEast Stirlingshire (3)(p)2 – 2Dumbarton (3)Queen's Park (3)(p)3 – 3East Fife (3)Stenhousemuir (3)0–2Cowdenbeath (3)Montrose (3)1–2Queen of the South (3)Stirling Albion (3)1–2Arbroath (3)Stranraer (3)4–3Berwick Rangers (3)
Second round
Home teamScoreAway teamAirdrieonians (2)1–2Stranraer (3)Alloa Athletic (3)0–3Dundee United (1)Brechin City (2)0–2Hamilton Academical (2)Dunfermline Athletic (1)4–0Albion Rovers (2)Forfar Athletic (2)1–2Raith Rovers (2)Kilmarnock (2)3–2Clydebank (2)Motherwell (1)4–3Morton (2)Queen of the South (3)(p)2 – 2Dundee (2)Queen's Park (3)1–2Aberdeen (1)Rangers (1)5–0East Stirlingshire (3)St Johnstone (1)0–2Clyde (2)Celtic (1)4–0Ayr United (2)Cowdenbeath (3)0–2Heart of Midlothian (1)Falkirk (2)1 – 1(p)Partick Thistle (2)Meadowbank Thistle (2)0–1Hibernian (1)St Mirren (1)1–0Arbroath (3)
Third round
Home teamScoreAway teamDunfermline Athletic (1)1–2Queen of the South (3)Motherwell (1)2–0Clyde (2)Partick Thistle (2)1–3Dundee United (1)Rangers (1)1–0Kilmarnock (2)Aberdeen (1)4–0Stranraer (3)Hamilton Academical (2)0–1Celtic (1)Raith Rovers (2)1–0Hibernian (1)St Mirren (1)0–1Heart of Midlothian (1)
Quarter-finals
Semi-finals
Final
References
Sources Scottish League Cup 1990–91, Soccerbase Scottish League Cup 1990–91, London Hearts