| County Antrim Shield | |
| Year: | 1989–90 |
| Num Teams: | 16 |
| Defending Champions: | Bangor |
| Winners: | Glentoran (20th win) |
| Second: | Linfield |
| Matches: | 15 |
| Goals: | 42 |
| Prev Season: | 1988–89 |
| Next Season: | 1990–91 |
The 1989–90 County Antrim Shield was the 101st edition of the County Antrim Shield, a cup competition in Northern Irish football.[1]
Glentoran won the tournament for the 20th time, defeating Linfield 6–5 on penalties after the final had finished 0-0.[2] For the 4th year running the County Antrim FA invited three clubs from County Armagh to compete (Glenavon, Newry Town and Portadown).[3]
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