1990–91 Czechoslovak Extraliga season
The 1990–91 Czechoslovak Extraliga season was the 48th season of the Czechoslovak Extraliga, the top level of ice hockey in Czechoslovakia. 14 teams participated in the league, and Dukla Jihlava won the championship.Playoffs
Semifinal
- Dukla Jihlava – VSŽ Košice 8:4
- Dukla Jihlava – VSŽ Košice 7:0
- VSŽ Košice – Dukla Jihlava 3:4
- Dukla Trenčín – HC CHZ Litvínov 3:5
- Dukla Trenčín – HC CHZ Litvínov 4:1
- HC CHZ Litvínov – Dukla Trenčín 4:3 SN
- HC CHZ Litvínov – Dukla Trenčín 6:5 PP
Final
- Dukla Jihlava – HC CHZ Litvínov 6:3
- Dukla Jihlava – HC CHZ Litvínov 3:2
- HC CHZ Litvínov – Dukla Jihlava 5:1
- HC CHZ Litvínov – Dukla Jihlava 0:7
- Dukla Trenčín – VSŽ Košice 6:4
- Dukla Trenčín – VSŽ Košice 4:2
