| Competition: | 1. divisjon |
| Season: | 1985 |
| Winners: | Rosenborg 4th title |
| Relegated: | Moss Brann Eik |
| Continentalcup1 Qualifiers: | Rosenborg |
| Continentalcup1: | European Cup |
| Continentalcup2 Qualifiers: | Vålerengen |
| Continentalcup2: | UEFA Cup |
| Continentalcup3 Qualifiers: | Lillestrøm |
| Continentalcup3: | Cup Winners' Cup |
| Matches: | 132 |
| Total Goals: | 396 |
| Highest Scoring: | Moss 6–2 Molde[1] (30 June 1985) |
| Biggest Home Win: | Lillestrøm 5–2 Eik (16 May 1985) |
| Biggest Away Win: | (19 May 1985) |
| Highest Attendance: | 28,569[2] (12 October 1985) |
| Lowest Attendance: | 835 Eik 1–0 Bryne (16 October 1985) |
| Average Attendance: | 4,403 2.2% |
| League Topscorer: | Jørn Andersen (23 goals) |
| Dates: | 27 April – 13 October |
| Prevseason: | 1984 |
| Nextseason: | 1986 |
| Updated: | end of the 1985 season |
The 1985 1. divisjon was the 41st completed season of top division football in Norway. The season began on 27 April 1985 and ended on 13 October 1985.
22 games were played with 2 points given for wins and 1 for draws. Number eleven and twelve were relegated. The winners of the two groups of the 2. divisjon were 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 2. divisjon and number ten in the 1. divisjon.
Rosenborg BK won the league after defeating league leader Lillestrøm S.K. 1–0 in the 22nd and final round. The game was attended by 28,569 spectators,[2] which is, as of 2019, still a league record attendance for a single game in the Norwegian top flight.
Note: Table lists in alphabetical order.
The qualification matches were contested between Moss (10th in the 1. divisjon), Sogndal (2nd in the 2. divisjon - Group A), and Tromsø (2nd in the 2. divisjon - Group B). Tromsø won and was promoted to the 1. divisjon.
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 |  Jørn Andersen | Vålerengen | 23 |
| 2 | Odd Johnsen | Mjøndalen | 18 |
| 3 | Cato Holtet | Kongsvinger | 14 |
| 4 | Trygve Johannessen | Brann | 11 |
| Arve Seland | Start | ||
| Joar Vaadal | Lillestrøm | ||
| 7 | Sverre Brandhaug | Rosenborg | 10 |
| Paul Folkvord | Bryne | ||
| Gøran Sørloth | Rosenborg | ||
| 10 | Tom Sundby | Lillestrøm | 9 |
| 11 | Kjetil Sagen | Kongsvinger | 8 |
| 12 | Nils Ove Hellvik | Viking | 7 |
| Geir Henæs | Moss | ||
| Sten Glenn Håberg | Start | ||
| Vidar Sanderud | Kongsvinger |