Welsh Language Music Day, often called by the Welsh name Dydd Miwsig Cymru, is a music festival founded by radio presenter Huw Stephens.

Events take place on the day at its base in Cardiff, as well as previously in London, Swansea, and even as far as Brooklyn and Budapest.

The festival takes place annually in Stephens' hometown of Cardiff, Wales, as well as hosting events in other UK cities including London, Caernarfon, and Swansea.

[2] Artists who have been highlighted include Mellt, Gwenno Saunders, The Gentle Good, Chroma, Adwaith, Candelas, Meic Stevens, Los Blancos, and Alffa.

[3] Organisations across Wales are involved in the yearly event, including Sŵn, BBC Horizons, Forté Project, Clwb Ifor Bach and Big Fish Little Fish.