The 1965 1. divisjon was the 21st completed season of top division football in Norway.

The season was contested by 10 teams, and Vålerengen won their first championship.

Vålerenga's 27 points was at the time a record for most points in a season, one more than Lyn achieved in the previous season.

Viking and Sandefjord BK were relegated to the 2. divisjon.

Source: nifs.noNotes:2: Team played last season in 2. divisjon.