| County Antrim Shield | |
| Year: | 1908–09 |
| Country: |  Ireland |
| Num Teams: | 6 |
| Defending Champions: | Linfield |
| Winners: | Glentoran II (1st win) |
| Second: | Cliftonville |
| Matches: | 5 |
| Goals: | 20 |
| Prev Season: | 1907–08 |
| Next Season: | 1909–10 |
The 1908–09 County Antrim Shield was the 21st edition of the County Antrim Shield, a cup competition in Irish football.[1]
Glentoran II (the reserve team of Glentoran) won the tournament for the 1st time, defeating Cliftonville 3–0 in the final at Celtic Park.[2] [3]
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