2024 All-Ireland Under-20 B Hurling Championship

The 2024 All-Ireland Under-20 B Hurling Championship was the 26th staging of the All-Ireland Under-20 B Hurling Championship since its establishment by the Gaelic Athletic Association in 1998. The championship ran from 30 March to 25 May 2024.

Derry were the defending champions, however, they earned the right to take part in the Leinster Under-20 Championship after beating Antrim in the 2024 Ulster U20HC final.

The All-Ireland final was played on 25 May 2023 at Croke Park in Dublin, between Down and Roscommon, in what was their second meeting in the final overall and a first meeting in two years. Down won the match by 0-20 to 0-10 to claim their second All-Ireland title overall and a first title in two years.

Roscommon's Paddy Fallon was the championship's top scorer with 1-21.

Top scorers

 * Overall