The 1974 Cork Junior Hurling Championship was the 77th staging of the Cork Junior Hurling Championship since its establishment by the Cork County Board.
On 3 November 1974, Watergrasshill won the championship following a 3–08 to 0–10 defeat of Rath Luirc in the final at the Castletownroche GAA Grounds. It remains their only championship title in the grade.
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