| Country |
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|---|---|---|---|
| Champions | Kildare | ||
| Runners-up | London | ||
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The All-Ireland Senior B Hurling Championship of 1989 was the 16th staging of Ireland's secondary hurling knock-out competition. Kildare won the championship, beating London 1-13 to 1-12 in the final at St. Conleth's Park, Newbridge.