The 2004–05 Crown Prince Cup was the 30th season of the Saudi premier knockout tournament since its establishment in 1957. It started with the qualifying rounds on 8 December 2004 and concluded with the final on 13 May 2005.
Qualifying rounds
All of the competing teams that are not members of the Premier League competed in the qualifying rounds to secure one of 4 available places in the Round of 16. The qualifying competition began on 8 December 2004. First Division sides Al-Khaleej, Al-Raed, and Najran, and Second Division side Al-Watani qualified. First roundSecond roundFinal Round ==Round of 16==
Round of 16
The Round of 16 fixtures were played on 15, 16, 17 and 18 February 2005. All times are local, AST (UTC+3). ==Quarter-finals==
Quarter-finals
The Quarter-finals fixtures were played on 3, 4, 5 and 6 March 2005. All times are local, AST (UTC+3). ==Semi-finals==
Semi-finals
The Semi-finals first legs were played on 25 and 26 April 2005 while the second legs were played on 29 and 30 April 2005. All times are local, AST (UTC+3). MatchesAl-Qadisiyah won 3–2 on aggregate. ---- Al-Hilal won 2–1 on aggregate. ==Final==
Final
The final was held on 13 May 2005. All times are local, AST (UTC+3). ==Top goalscorers==