The 1965–66 Eredivisie season was the sixth season of the Eredivisie, the top level of ice hockey in the Netherlands. Five teams participated in the league, and HYS Den Haag won the championship.
Regular season
edit| Club | GP | W | T | L | GF | GA | Pts | |
|---|---|---|---|---|---|---|---|---|
| 1. | H.H.IJ.C. Den Haag | 8 | 8 | 0 | 0 | 105 | 24 | 16 |
| 2. | T.IJ.S.C. Tilburg | 8 | 6 | 0 | 2 | 114 | 36 | 12 |
| 3. | Amstel Tijgers Amsterdam | 8 | 4 | 0 | 4 | 60 | 43 | 8 |
| 4. | IJ.H.C. Deventer | 8 | 1 | 1 | 6 | 19 | 126 | 3 |
| 5. | HC Rotterdam | 8 | 0 | 1 | 7 | 11 | 80 | 1 |