The 1947–48 Norgesserien was the 4th completed season of top division football in Norway.
Due to restructuring of the league system, 58 of the 74 teams were relegated at the end of the season.
SK Freidig won the championship after a 2–1 win against IL Sparta in the championship final.
League tables District I
District II, Group A
District II, Group B
District III
District IV, Group A
District IV, Group B
District V, Group A
District V, Group B
District VI
District VII
District VIII
Championship play-offs Preliminary round Team 1Team 21st leg2nd legVålerengens IF2–4Mjøndalen IF0–22–2Storm4–1Ørn2–12–0Viking FK6–3FK Donn2–14–2
Quarter-finals Team 1Team 21st leg2nd legReplayMjøndalen IF1–0Storms BK0–01–0Kapp IL4–7IL Sparta2–32–4Viking FK5–0SK Brann2–03–0SK Freidig5–5Kristiansund FK4–11–4Freidig won on
Semi-finals Team 1ScoreTeam 2Replay IL Sparta2–0Mjøndalen IFViking FK2–2SK Freidig1–2
Final Team 1ScoreTeam 2SK Freidig2–1IL Sparta
Relegation play-offs Preliminary round Team 1Team 21st leg2nd legIF Birkebeineren2–3Sandaker SFK2–10–2
Group 1
Group 2
References Norway – List of final tables (RSSSF)