| County Antrim Shield | |
| Year: | 1890–91 |
| Country: |  Ireland |
| Num Teams: | 8 |
| Winners: | Black Watch (1st win) |
| Second: | Oldpark |
| Matches: | 8 |
| Goals: | 48 |
| Prev Season: | 1889–90 |
| Next Season: | 1891–92 |
The 1890–91 County Antrim Shield was the 3rd edition of the County Antrim Shield, a cup competition in Irish football.[1]
Black Watch (a British Army football team) won the tournament for the 1st time, defeating Oldpark 4–2 in the final.[2] [3]
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