| Ulster Cup | |
| Year: | 1970–71 |
| Num Teams: | 12 |
| Defending Champions: | Coleraine |
| Winners: | Linfield (8th win) |
| Second: | Coleraine |
| Matches: | 66 |
| Goals: | 215 |
| Prev Season: | 1969–70 |
| Next Season: | 1971–72 |
The 1970–71 Ulster Cup was the 23rd edition of the Ulster Cup, a cup competition in Northern Irish football.[1]
Linfield won the tournament for the 8th time, finishing top of the group standings.[2]