Duhallow Junior B Hurling Championship
The Duhallow Junior B Hurling Championship is the second highest hurling competition in the Duhallow division in Cork. It is run for teams deemed too weak for Junior A level in the Duhallow division. The championship includes a group stage, so every team has at least two matches. The winners of the Duhallow competition go on to compete in the Cork Junior B Inter-Divisional Hurling Championship.
Newmarket are the title-holders, defeating Dromtarriffe by 0–21 to 0–07 in the 2025 final.