The 1950–51 Irish Cup was the 71st edition of the Irish Cup, the premier knock-out cup competition in Northern Irish football.

The defending champions were Linfield, however they were defeated 3–1 in the semi-finals by Glentoran.

[1] Glentoran won the cup for the 7th time, defeating Ballymena United 3–1 in the final at Windsor Park.

[2] [3]