The 1965–66 Czechoslovak Extraliga season was the 23rd season of the Czechoslovak Extraliga, the top level of ice hockey in Czechoslovakia. 10 teams participated in the league, and ZKL Brno won the championship.
Standings[]
| Pl. | Team | GP | W | T | L | GF-GA | Pts |
|---|---|---|---|---|---|---|---|
| 1. | ZKL Brno | 36 | 25 | 6 | 5 | 203:92 | 56 |
| 2. | Dukla Jihlava | 36 | 26 | 4 | 6 | 197:94 | 56 |
| 3. | Slovan CHZJD Bratislava | 36 | 23 | 6 | 7 | 191:122 | 52 |
| 4. | Spartak ČKD Prag | 36 | 18 | 7 | 11 | 144:121 | 43 |
| 5. | Tesla Pardubice | 36 | 18 | 4 | 14 | 174:145 | 40 |
| 6. | TJ SONP Kladno | 36 | 12 | 3 | 21 | 145:187 | 27 |
| 7. | Dukla Košice | 36 | 9 | 8 | 19 | 105:131 | 26 |
| 8. | TJ Gottwaldov | 36 | 9 | 4 | 23 | 111:189 | 22 |
| 9. | CHZ Litvínov | 36 | 9 | 2 | 25 | 104:198 | 20 |
| 10. | TJ Spartak LZ Plzeň | 36 | 6 | 6 | 24 | 88:180 | 18 |
1. Liga-Qualification[]
| Place | Team | Pts |
|---|---|---|
| 1. | VŽKG Ostrava | 11 |
| 2. | VTŽ Chomutov | 7 |
| 3. | Motorlet Prag | 4 |
| 4. | Dukla Trenčín | 2 |