The 1971 1. divisjon was the 27th completed season of top division football in Norway.

It was contested by 10 teams, and Rosenborg BK won the championship, their third league title.

Only one team was relegated this season due to the league's extension to 12 teams ahead of the 1972 season.

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