Mae Merthyr Rising yn ŵyl sy’n cael ei chynnal i gofio un o’r gwrthryfeloedd cyntaf erioed i gael ei drefnu gan weithwyr, sef Gwrthryfel neu Derfysg Merthyr ym 1831. Mae’r ŵyl yn dathlu’r digwyddiad trwy wledd o gerddoriaeth, celf a thrafod gwleidyddol.
Merthyr Rising is a festival which takes place during the anniversary of one of the very first organised uprisings by workers in 1831 known as the Merthyr Rising. The festival now celebrates this symbolic event through a cultural festival of music, arts, political discussion.