1965–66 Gruppenliga season

The 1965-66 Gruppenliga season was the fourth season of the Gruppenliga and the first season of the league as the second-level competition in East Germany.

Regular season
Some tables are incomplete.

Eastern Group

 * Group 1

ESG Zittau II was forced to withdraw from the league.
 * Group 2

It is not known if a series between the two Eastern group winners was contested.

Southern Group

 * Group 1

ASG Vorwarts Crimmitschau defeated BSG Aufbau Schönheide in the Southern final.
 * Group 2

Gruppenliga Championship

 * Final
 * Semifinals

Relegation (Oberliga – Gruppenliga)
Vorwarts declined promotion to the DDR-Oberliga, so SC Einheit Dresden retained its spot in the league.