The 1981 All-Ireland Senior B Hurling Championship 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.

Results All-Ireland Senior B Hurling Championship

First round

Quarter-final

Semi-finals

Home final

Final

References

Donegan, Des, The Complete Handbook of Gaelic Games (DBA Publications Limited, 2005).