| Irish Cup | |
| Year: | 1902–03 |
| Country: |  Ireland |
| Num Teams: | 12 |
| Defending Champions: | Linfield |
| Winners: | Distillery (7th win) |
| Second: | Bohemians |
| Matches: | 12 |
| Goals: | 54 |
| Prev Season: | 1901–02 |
| Next Season: | 1903–04 |
The 1902–03 Irish Cup was the 23rd edition of the Irish Cup, the premier knockout cup competition in Irish football.
Linfield unsuccessfully defended its 1902 title losing in the semifinals to Distillery. Distillery successfully defend it 7th title in the final defeating Bohemian 3–1.[1] [2]
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