The 1983–84 Gold Cup was the 65th edition of the Gold Cup, a cup competition in Northern Irish football.
The tournament was won by Linfield for the 28th time, defeating Glentoran 3–1 in the final at Windsor Park.
For this edition, there was a change in the format of the group stage. Section A clubs played each other twice and played three matches with Section B clubs (and vice versa for Section B clubs). Section C clubs played each other once and played four matches with Section D clubs (and vice versa for Section D clubs). The clubs that topped each section progressed to the semi-finals.