1965–66 Swedish Division I season

The 1965–66 Swedish Division I season was the 22nd season of Swedish Division I. Brynas IF won the league title by beating Vastra Frolunda IF in the playoff final.

Quarterfinals

 * Djurgårdens IF – AIK 6–1, 7–1
 * Västra Frölunda IF – MoDo AIK 7–1, 4–3
 * Leksands IF – Södertälje SK 5–2, 3–4, 3–1
 * Brynäs IF – Wifsta/Östrand-Fagerviks IF 11–0, 7–2

Semifinals

 * Brynäs IF – Leksands IF 8–3, 3–1
 * Västra Frölunda IF – Djurgårdens IF 5–4, 2–6, 12–1

3rd place

 * Djurgårdens IF – Leksands IF 7–4, 7–7

Final

 * Brynäs IF – Västra Frölunda IF 4–1, 5–6, 7–1