The 1987 Croke Cup was the 36th staging of the Croke Cup since its establishment by the Gaelic Athletic Association in 1944. The competition ran from 12 April to 10 May 1987.
St Brendan's Community School were the defending champions, however, they were beaten by St Kieran's College in the Leinster final.
The final was played on 10 May 1987 at St Brendan's Park, Birr, between St Flannan's College and St Kieran's College, in what was their fourth meeting in the final overall and a first meeting in 29 years. St Flannan's College won the match by 4–11 to 1–07 to claim their 10th Croke Cup title overall and a first title in four years.
Tim Canny was the top scorer wuth 0-12.