The 1973 Croke Cup was the 22nd staging of the Croke Cup since its establishment by the Gaelic Athletic Association in 1944. The competition ran from 23 March to 15 April 1973.
St Finbarr's College were the defending champions.
The final, a replay, was played on 15 April 1973 at O'Moore Park in Portlaoise, between St Peter's College and Our Lady's College, in what was their first ever meeting in the final. St Peter's College won the match by 4âÂÂ15 to 1âÂÂ05 to claim a fourth Croke Cup title overall and a first title in five years.
Pat O'Connor was the top scorer with 3-12.