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The 1984 Croke Cup was the 33rd staging of the Croke Cup since its establishment by the Gaelic Athletic Association in 1944. The competition ran from 15 April to 6 May 1984.
The final was played on 6 May 1984 at Croke Park in Dublin, between St Finbarr's College and St Kieran's College, in what was their fifth meeting in the final and a first meeting in 10 years. St Finbarr's College won the match by 1–15 to 0–08 to claim their fifth Croke Cup title overall and a first title in 10 years. It would be their last Croke Cup title.