| County Antrim Shield | |
| Year: | 1920–21 |
| Country: |  Ireland |
| Num Teams: | 6 |
| Defending Champions: | Distillery |
| Winners: | Glentoran (6th win) |
| Second: | Distillery |
| Matches: | 11 |
| Goals: | 16 |
| Prev Season: | 1919–20 |
| Next Season: | 1921–22 |
The 1920–21 County Antrim Shield was the 32nd edition of the County Antrim Shield, a cup competition in Irish football.[1]
Glentoran won the tournament for the 6th time, defeating Distillery 1–0 in the third final replay at Windsor Park,[2] after the original final and two subsequent replays finished in draws.[3] [4] [5] [6]
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