The 2003–04 Deutsche Eishockey Liga season was the 10th season since the founding of the Deutsche Eishockey Liga (German Ice Hockey League). The Frankfurt Lions became German Champions, and the Wölfe Freiburg (Freiburg Wolves) were relegated back to the 2. Bundesliga after a single season.
A visible change for the fans was the league corporate sponsorship by the German Yellow Pages (Gelbe Seiten) who signed a 3-year agreement, later extended ending 2009.
Regular season
The regular season start was on September 4, 2003. The first 8 teams qualified for the playoffs, the last two are to go into playdowns, to determine which team will be relegated.
GP = Games Played; SOW = Shootout win; SOL = Shootout loss; GF:GA = Goals for and against Color code: = Direct Playoff qualification, = Season ends, = Playdown/Relegation