The GAA Hurling All-Ireland Minor B Championship is an annual hurling competition organised by the Gaelic Athletic Association for the youngest competitors (under-18) in Ireland. It is sponsored by the Electricity Supply Board and therefore, officially known as the ESB GAA Hurling All-Ireland Minor B Championship.
The series of games is played in August, with the All-Ireland final being played on the last Sunday of the month. The championship has always been played on a straight knockout basis, open to teams from each of the four provinces of Ireland. Teams that are deemed ineligible or "too weak" for the All-Ireland Minor Hurling Championship participate in the B championship.
The championship currently consists of several stages, beginning with quarter-finals and culminating in a final.
Seven teams currently participate in the championship.