The 2015 Under-19 Provincial Championship Group B was contested from 15 August to 8 October 2015. The tournament (also known as the ABSA Under-19 Provincial Championship for sponsorship reasons) was the second tier of the 2015 edition of the Under-19 Provincial Championship, an annual Under-19 inter-provincial rugby union competition featuring fifteen South African provincial unions. The tournament was won by the Griffons U19s; they beat the Pumas U19 24–21 in the final played on 8 October 2015.