The 1989 1. divisjon was the 45th completed season of top division football in Norway.

The season began on 30 April 1989, and ended on 8 October 1989.

This was the last season the top flight of Norwegian football would be called the 1. divisjon.

The following year, the league changed its name to Tippeligaen, from its sponsor, Norsk Tipping.

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