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. Al-Ittihad were the defending champions, but were eliminated in the semi-finals by Al-Hilal. Al-Hilal won their 5th title following a 2–1 win over Al-Qadisiyah in the final.