The 1990 Croke Cup was the 39th staging of the Croke Cup since its establishment by the Gaelic Athletic Association in 1944. The competition ran from 15 April to 6 May 1990.
The final was played on 6 May 1990 at the Mitchelstown Grounds, between St Kieran's College and St Flannan's College, in what was their sixth meeting in the final overall and a second consecutive meeting.[3] St Kieran's College won the match by 2–10 to 0–07 to claim a record-equalling 10th Croke Cup title overall and a third title in succession.[4][5]