| All-Ireland Senior B Hurling Championship | |
| Year: | 1988 |
| Country: | |
| Winners: | London |
| Second: | Down |
| Prev Season: | 1987 |
| Next Season: | 1989 |
The 1988 All-Ireland Senior B Hurling Championship was the 15th staging of Ireland's secondary hurling knock-out competition. London won the championship, beating Down 2–6 to 1–7 in the final at the Emerald GAA Grounds, Ruislip.