The 1990–91 IHL season was the 46th season of the International Hockey League, a North American minor professional league. The season started with 11 team, falling to 10 when Albany Choppers folded in February 1991. The Peoria Rivermen won the Turner Cup.
East Division 
West Division
| East Division | GP | W | L | T | OTL | GF | GA | Pts |
|---|---|---|---|---|---|---|---|---|
| Kalamazoo Wings | 82 | 52 | 29 | 0 | 1 | 354 | 302 | 105 |
| Indianapolis Ice | 82 | 48 | 29 | 0 | 5 | 342 | 264 | 101 |
| Fort Wayne Komets | 83 | 43 | 35 | 0 | 5 | 369 | 335 | 91 |
| Muskegon Lumberjacks | 83 | 38 | 40 | 0 | 5 | 305 | 352 | 81 |
| Albany Choppers | 55 | 22 | 30 | 0 | 3 | 191 | 232 | 47 |
| West Division | GP | W | L | T | OTL | GF | GA | Pts |
|---|---|---|---|---|---|---|---|---|
| Peoria Rivermen | 82 | 58 | 19 | 0 | 5 | 405 | 261 | 121 |
| Salt Lake Golden Eagles | 83 | 50 | 28 | 0 | 5 | 353 | 296 | 105 |
| Phoenix Roadrunners | 83 | 38 | 36 | 0 | 9 | 326 | 343 | 85 |
| Milwaukee Admirals | 82 | 36 | 43 | 0 | 3 | 275 | 316 | 75 |
| San Diego Gulls | 83 | 30 | 45 | 0 | 8 | 273 | 362 | 68 |
| Kansas City Blades | 82 | 25 | 53 | 0 | 4 | 255 | 385 | 65 |
| Turner Cup-Quarterfinals | Turner Cup-Semifinals | Turner Cup-Final | ||||||||||||
| W1 | Peoria Rivermen | 4 | ||||||||||||
| W4 | Milwaukee Admirals | 2 | ||||||||||||
| W1 | Peoria Rivermen | 4 | ||||||||||||
| W3 | Phoenix Roadrunners | 3 | ||||||||||||
| W2 | Salt Lake Golden Eagles | 0 | ||||||||||||
| W3 | Phoenix Roadrunners | 4 | ||||||||||||
| W1 | Peoria Rivermen | 4 | ||||||||||||
| E3 | Fort Wayne Komets | 2 | ||||||||||||
| E1 | Kalamazoo Wings | 4 | ||||||||||||
| E4 | Muskegon Lumberjacks | 1 | ||||||||||||
| E1 | Kalamazoo Wings | 2 | ||||||||||||
| E3 | Fort Wayne Komets | 4 | ||||||||||||
| E2 | Indianapolis Ice | 3 | ||||||||||||
| E3 | Fort Wayne Komets | 4 | ||||||||||||
