| Country |
|
||
|---|---|---|---|
| Champions | Antrim | ||
| Runners-up | London | ||
|
|||
The All-Ireland Senior B Hurling Championship of 1981 was the eighth staging of Ireland's secondary hurling knock-out competition. Antrim won the championship, beating London 3-17 to 3-14 in the final at Fr. Healy Park, Loughguile.
First round
Quarter-final
Semi-finals
Home final
Final