The 2004 All-Ireland Minor Hurling Championship was the 74th staging of the All-Ireland Minor Hurling Championship since its establishment by the Gaelic Athletic Association in 1928. The championship began on 27 March 2004 and ended on 19 September 2004.
Kilkenny entered the championship as defending champions.
On 19 September 2004, Galway won the championship following a 0-16 to 1-12 defeat of Kilkenny in the All-Ireland final replay at O'Connor Park. This was their sixth All-Ireland title overall and their first title since 2000.
Tipperary's Darragh Hickey was the championship's top scorer with 4-29.
Group stage
Quarter-finals
Semi-finals
Final
First round
Playoffs
Semi-finals
Final
Semi-final
Final
Quarter-finals
Semi-finals
Finals