| Gold Cup | |
| Year: | 1965–66 |
| Num Teams: | 12 |
| Defending Champions: | Derry City |
| Winners: | Linfield (21st win) |
| Second: | Portadown |
| Matches: | 14 |
| Goals: | 57 |
| Prev Season: | 1964–65 |
| Next Season: | 1966–67 |
The 1965–66 Gold Cup was the 47th edition of the Gold Cup, a cup competition in Northern Irish football.[1]
The tournament was won by Linfield for the 21st time, defeating Portadown 6–0 in the final at The Oval.[2]
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