| All-Ireland Senior B Hurling Championship | |
| Year: | 1989 |
| Country: | |
| Winners: | Kildare |
| Second: | London |
| Prev Season: | 1988 |
| Next Season: | 1990 |
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.