| Ulster Cup | |
| Year: | 1978–79 |
| Num Teams: | 12 |
| Defending Champions: | Linfield |
| Winners: | Linfield (12th win) |
| Second: | Crusaders |
| Matches: | 66 |
| Goals: | 210 |
| Prev Season: | 1977–78 |
| Next Season: | 1979–80 |
The 1978–79 Ulster Cup was the 31st edition of the Ulster Cup, a cup competition in Northern Irish football.[1]
Linfield won the tournament for the 12th time and 2nd consecutive season, finishing top of the group standings.[2]