1965–66 DDR Oberliga

The 1965–66 DDR-Oberliga was the 17th season of the DDR-Oberliga, the first tier of league football in East Germany.

The league was contested by fourteen teams. National People's Army club FC Vorwärts Berlin won the championship, the club's fifth of six national East German championships all up.

Henning Frenzel of 1. FC Lokomotive Leipzig was the league's top scorer with 22 goals, while Jürgen Nöldner of FC Vorwärts Berlin won the seasons East German Footballer of the year award.

On the strength of the 1965–66 title Vorwärts qualified for the 1966–67 European Cup where the club was knocked out by Górnik Zabrze in the first round. Seventh-placed club BSG Chemie Leipzig qualified for the 1966–67 European Cup Winners' Cup as the seasons FDGB-Pokal winner and was knocked out by Standard Liège in the second round. Third-placed 1. FC Lokomotive Leipzig qualified for the 1966–67 Inter-Cities Fairs Cup where it was knocked out in the quarter finals by Kilmarnock F.C..

In December 1965 and January 1966 East German football saw a major restructuring with the introduction of Football Clubs as separate entities from the Sports Clubs. With one exception this only affected clubs playing in the Oberliga that season. As a result ASK Vorwärts Berlin became FC Vorwärts Berlin, SC Motor Jena became FC Carl Zeiss Jena, SC Leipzig became 1. FC Lokomotive Leipzig, SC Empor Rostock became FC Hansa Rostock, SC Karl-Marx-Stadt became FC Karl-Marx-Stadt, SC Dynamo Berlin became Berliner FC Dynamo, SC Chemie Halle became Hallescher FC Chemie, SC Turbine Erfurt became FC Rot-Weiss Erfurt and SC Aufbau Magdeburg became SC Magdeburg and then 1. FC Magdeburg. Outside the Oberliga only one club, DDR-Liga northern division champions TSC Berlin which became 1. FC Union Berlin, was part of this change. With the exception of Vorwärts Berlin the clubs all retained their name until the disbanding of the Oberliga in 1991 and, in some cases, beyond.