| Competition: | 1. divisjon |
| Season: | 1977 |
| Winners: | Lillestrøm 3rd title |
| Relegated: | Ham Kam Rosenborg Mjøndalen |
| Continentalcup1: | European Cup |
| Continentalcup1 Qualifiers: | Lillestrøm |
| Continentalcup2: | Cup Winners' Cup |
| Continentalcup2 Qualifiers: | Bodø/Glimt |
| Continentalcup3: | UEFA Cup |
| Continentalcup3 Qualifiers: | Molde Start |
| Matches: | 132 |
| Total Goals: | 396 |
| League Topscorer: | Trygve Johannessen (17 goals) |
| Biggest Home Win: | (2 October 1977) (16 October 1977) |
| Biggest Away Win: | (25 April 1977) (1 May 1977) (19 June 1977) (10 September 1977) (26 September 1977) |
| Highest Scoring: | (15 August 1977) |
| Longest Wins: | Lillestrøm (6 games) |
| Longest Unbeaten: | Lillestrøm (17 games) |
| Longest Winless: | Rosenborg (17 games) |
| Longest Losses: | Mjøndalen Rosenborg Vålerenga (5 games) |
| Highest Attendance: | 22,150 (25 April 1977) |
| Lowest Attendance: | 1,890 (9 October 1977) |
| Average Attendance: | 7,339 13.1% |
| Dates: | 25 April – 16 October |
| Prevseason: | 1976 |
| Nextseason: | 1978 |
The 1977 1. divisjon was the 33rd completed season of top division football in Norway.
There were 12 teams in the division. Lillestrøm SK emerged as the championship victors, their third league title. Lillestrøm's 36 points was at the time a record for most points in a season, two more than Viking and Fredrikstad achieved in the 1972 season.
Note: Table lists in alphabetical order.
Trygve Johannessen, Viking – 17 goals