| Ulster Cup | |
| Year: | 1976–77 |
| Num Teams: | 12 |
| Defending Champions: | Coleraine |
| Winners: | Glentoran (4th win) |
| Second: | Portadown |
| Matches: | 66 |
| Goals: | 238 |
| Prev Season: | 1975–76 |
| Next Season: | 1977–78 |
The 1976–77 Ulster Cup was the 29th edition of the Ulster Cup, a cup competition in Northern Irish football.[1]
Glentoran won the tournament for the 4th time, finishing top of the group standings.[2]