| County Antrim Shield | |
| Year: | 1917–18 |
| Country: |  Ireland |
| Num Teams: | 6 |
| Defending Champions: | Linfield |
| Winners: | Glentoran (5th win) |
| Second: | Linfield |
| Matches: | 7 |
| Goals: | 14 |
| Prev Season: | 1916–17 |
| Next Season: | 1918–19 |
The 1917–18 County Antrim Shield was the 29th edition of the County Antrim Shield, a cup competition in Irish football.[1]
Glentoran won the tournament for the 8th time, defeating Linfield 2–0 in the final at Grosvenor Park.[2] [3]
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