| Season: | 1991 |
| Competition: | Tippeligaen |
| Dates: | 27 April – 13 October |
| Winners: | Viking 8th title |
| Relegated: | Fyllingen Strømsgodset |
| Continentalcup1 Qualifiers: | Viking |
| Continentalcup1: | Champions League |
| Continentalcup2 Qualifiers: | Strømsgodset |
| Continentalcup2: | Cup Winners' Cup |
| Continentalcup3 Qualifiers: | Rosenborg |
| Continentalcup3: | UEFA Cup |
| Highest Scoring: | Rosenborg 6–2 Sogndal[1] (18 August 1991) |
| Biggest Home Win: | Lillestrøm 6–1 Tromsø (6 October 1991) |
| Biggest Away Win: | (9 June 1991) |
| Matches: | 132 |
| Total Goals: | 345 |
| League Topscorer: | Karl Petter Løken (12 goals) |
| Highest Attendance: | 20,454 Rosenborg 0–0 Viking (16 May 1991) |
| Lowest Attendance: | 1,291 Lyn 1–1 Brann (22 September 1991) |
| Average Attendance: | 5,656 13.5% |
| Prevseason: | 1990 |
| Nextseason: | 1992 |
The 1991 Tippeligaen was the 47th completed season of top division football in Norway. 22 game-weeks were played with 3 points given for wins and 1 for draws. Number eleven and twelve are relegated. The winners of the two groups of the 1. divisjon are promoted, as well as the winner of a series of play-off matches between the two second placed teams in the two groups of the 1. divisjon and number ten in the Tippeligaen.
The season began on April 27, 1991. The season ended on October 13, 1991, with Viking claiming their eighth league title. Viking were thus the last club to win the league before Rosenborg's 13-year domination started.
Note: Table lists in alphabetical order.
Brann, Bryne, and Strindheim played play-offs, Brann won and remained in Tippeligaen.
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 |  Karl Petter Løken | Rosenborg | 12 |
| 2 | Øystein Neerland | Molde | 11 |
| 3 | Stein Berg Johansen | Tromsø | 10 |
| 4 | Odd Johnsen | Strømsgodset | 9 |
| Morten Pettersen | Start | ||
| Gøran Sørloth | Rosenborg | ||
| 7 | Petter Belsvik | Molde | 8 |
| Børre Meinseth | Viking | ||
| Halvor Storskogen | Strømsgodset | ||
| 10 | Jostein Flo | Sogndal | 7 |
| Tom Fodstad | Lyn | ||
| Alf Kåre Tveit | Viking |