The 1984 2. divisjon was a Norway's second-tier football league season.
The league was contested by 24 teams, divided into two groups; A and B. The winners of group A and B were promoted to the 1985 1. divisjon. The second placed teams met the 10th position finisher in the 1. divisjon in a qualification round where the winner was promoted to 1. divisjon. The bottom three teams inn both groups were relegated to the 3. divisjon.
Tables Group A
Group B
Promotion play-offs Results Vidar – HamKam 2–2 Moss – Vidar 4–1 HamKam – Moss 0–0
Moss won the qualification round and remained in the 1. divisjon.
Play-off table
Top goalscorers 22 goals: Odd Johnsen, Mjøndalen 19 goals: Peter Osborne, Haugar 17 goals: , Brann 15 goals: Trond Johansen, Tromsø 13 goals: Svein Bakke, Sogndal Roald Nergård, Sunndal 12 goals: Per Terje Markussen, Mjøndalen 11 goals: Trygve Johannessen, Vidar and Brann Ivar Morten Normark, Mjølner Jan Arild Roppen, Hødd
References