The 2003–04 Elitserien season was the 29th season of Elitserien. It started in September 2003, with the regular season ending February 2004.
Regular season
Final standings
Scoring leaders
Leading goaltenders
Playoffs
After the regular season, the standard of 8 teams qualified for the playoffs.
Playoff bracket
In the first round, the highest remaining seed chose which of the four lowest remaining seeds to be matched against. In each round the higher-seeded team was awarded home ice advantage. Each best-of-seven series followed a 1–1–1–2–1–1 format: the higher-seeded team played at home for games 2 and 4 (plus 5 and 7 if necessary), and the lower-seeded team was at home for game 1, 3 and 6 (if necessary).