| County Antrim Shield | |
| Year: | 1965–66 |
| Num Teams: | 12 |
| Defending Champions: | Crusaders |
| Winners: | Linfield (28th win) |
| Second: | Ballymena United |
| Matches: | 11 |
| Goals: | 39 |
| Prev Season: | 1964–65 |
| Next Season: | 1966–67 |
The 1965–66 County Antrim Shield was the 77th edition of the County Antrim Shield, a cup competition in Northern Irish football.[1]
Linfield won the tournament for the 28th time, defeating Ballymena United 4–0 in the final at Solitude.[2] [3]
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