| Tournament details | |
|---|---|
| Country |  Ireland England |
| Final positions | |
| Champions | Kildare |
| Runner-up | Mayo |
The 2004 All-Ireland Senior B Hurling Championship was the 26th staging of the All-Ireland Senior B Hurling Championship, Ireland's secondary hurling knock-out competition. Kildare won the championship, beating Mayo 3-14 to 3-7 in the final at Croke Park, Dublin.