1984 All-Ireland Senior B Hurling Championship
| Tournament details | |
|---|---|
| Country | Ireland England |
| Final positions | |
| Champions | Westmeath |
| Runners-up | London |
The 1984 All-Ireland Senior B Hurling Championship was the 11th staging of Ireland's secondary hurling knock-out competition. Westmeath won the centenary year championship, beating London 4–10 to 1–16 in the final at the Emerald GAA Grounds, Ruislip.