The 1990–91 Austrian Hockey League season was the 61st season of the Austrian Hockey League, the top level of ice hockey in Austria. Six teams participated in the league, and EC KAC won the championship.
- ATSE Graz (1) - VEU Feldkirch (4): 1:3 (2:4, 3:6, 3:2, 3:10)
- EC VSV (2) - EC KAC (5): 0:3 (2:4, 3:4, 3:6)
- Wiener EV (3) - EV Innsbruck (6): 3:2 (9:1, 3:6, 4:1, 4:5, 5:3)
- EC KAC (5) - Wiener EV (3): 3:1 (6:4, 4:5, 3:2, 6:3)
- VEU Feldkirch (4) - EC VSV (2): 0:3 (2:4, 3:4, 5:9)
- EC VSV (2) - EC KAC (5): 1:3 (5:6 SO., 3:7, 3:0, 3:4)