2003–04 Turkish Basketball League
The 2003–04 Turkish Basketball League was the 38th season of the top-tier professional basketball league in Turkey. The season started on October 10, 2003. Efes Pilsen won their eleventh national championship this season.
Regular season
League table
- ''Oyak Renault and Tofaş have been relegated from the Turkish Basketball First League.
Turkish Basketball League 2003–04 play-offs
as of June 30, 2004The 2004 Turkish Basketball League play-offs is the final phase of the 2003–04 regular season.
First round, Quarterfinal and Semifinal series are 5-match series. The teams reaches the first 3 wins is through to the next round. The team which has won both regular season match-ups starts with a 1–0 lead to the series. If teams split up the regular season meetings, series starts with a 1–1 draw.
Final series are 7-match series and the team reaches first 4 wins is the champion of the Turkish Basketball League.