| Tournament details | |
|---|---|
| Country |  Ireland England |
| Final positions | |
| Champions | Kildare |
| Runner-up | London |
The 1989 All-Ireland Senior B Hurling Championship 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.