The 1986–87 Harty Cup was the 67th staging of the Harty Cup since its establishment in hurling by the Munster Council of Gaelic Athletic Association in 1918.

[1] The competition ran from 11 February to 29 March 1987.

North Monastery unsuccessfully defended its title, in the semi-finals, by losing to St Flannan's College.

[2][3] St Flannan's College won the Harty Cup final, 3–12 to 2–06, on 29 March 1987 at FitzGerald Park in Kilmallock, against Midleton CBS, in what was their second meeting in the final overall and a first meeting since 1944.

[4][5] Limerick CBS's Michael Hickey was the top scorer with 4–14.