The 2004 Kilkenny Senior Hurling Championship was the 110th staging of the Kilkenny Senior Hurling Championship since its establishment by the Kilkenny County Board in 1887. The championship began on 25 September 2004 and ended on 31 October 2004.
On 17 October 2004, Dicksboro were relegated following a 0–12 to 1–08 defeat by St. Martin's.
On 31 October 2004, James Stephens won the title after a 2–12 to 3–12 defeat of Young Irelands in the final at Nowlan Park.[2] It was their seventh championship title overall and their first title since 1981.