The 1993 All-Ireland Senior B Hurling Championship was the 20th staging of the All-Ireland Senior B Hurling Championship since its establishment by the Gaelic Athletic Association in 1974. The championship ran from 16 May to 11 July 1993.
Carlow were the defending champions, however, they availed of their right to promotion to the Leinster Senior Hurling Championship and did not field a team.
The All-Ireland final was played at the Emerald GAA Grounds in Ruislip on 11 July 1993 between Meath and London, in what was their second meeting in the All-Ireland final and a first meeting in eight years. Meath won the match by 2-16 to 1-16 to claim their very first All-Ireland title.
Meath's Pat Potterton was the championship's top scorer with 0-38.