| Irish Cup | |
| Year: | 1983–84 |
| Country: | Northern Ireland |
| Num Teams: | 32 |
| Defending Champions: | Glentoran |
| Second: | Carrick Rangers |
| Matches: | 37 |
| Goals: | 111 |
| Prev Season: | 1982–83 |
| Next Season: | 1984–85 |
The 1983–84 Irish Cup was the 104th edition of the Irish Cup, Northern Ireland's premier football knock-out cup competition. It began on 28 January 1984, and concluded on 5 May 1984 with the final.
Glentoran were the defending champions after winning their 10th Irish Cup last season, defeating rivals Linfield 2–1 in the 1983 final replay.[1] This season they reached the semi-finals, but lost to Carrick Rangers. Ballymena United won their fourth Irish Cup, defeating Carrick Rangers 4–1 in the final.[2]
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