| Country | Ireland England |
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|---|---|---|---|
| Champions | London | ||
| Runner-up | Carlow | ||
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The All-Ireland Senior B Hurling Championship of 1987 was the 14th staging of Ireland's secondary hurling knock-out competition. London won the championship, beating Carlow 0-20 to 1-15 in the final at Dr. Cullen Park, Carlow.