David Eirwyn Morgan (23 April 1918 – 30 August 1982) was a minister, journalist and Welsh nationalist politician. Born in Pen-y-groes in Carmarthenshire, Morgan began preaching at an early age in the Baptist church in nearby Llandybie. He studied at Ammanford Grammar School, where he befriended David Rees Griffiths, the school caretaker, who introduced him to Welsh literature.