List of Famous people named Dafydd

Dafydd ap Llywelyn was Prince of Gwynedd from 1240 to 1246. He was the first ruler to claim the title Prince of Wales.

Dafydd ap Gruffydd was Prince of Wales from 11 December 1282 until his execution on 3 October 1283 on the orders of King Edward I of England. He was the last independent ruler of Wales.

Dafydd ab Owain Gwynedd was Prince of Gwynedd from 1170 to 1195. For a time he ruled jointly with his brothers Maelgwn ab Owain Gwynedd and Rhodri ab Owain Gwynedd.

Dafydd Rhys Williams OC OOnt CCFP FCFP FRCPC FRCP is a Canadian physician, public speaker, CEO, author and a retired CSA astronaut. Williams was a mission specialist on two space shuttle missions. His first spaceflight, STS-90 in 1998, was a 16-day mission aboard Space Shuttle Columbia dedicated to neuroscience research. His second flight, STS-118 in August 2007, was flown by Space Shuttle Endeavour to the International Space Station. During that mission he performed three spacewalks, becoming the third Canadian to perform a spacewalk and setting a Canadian record for total number of spacewalks. These spacewalks combined for a total duration of 17 hours and 47 minutes.

Dafydd Elis-Thomas, Baron Elis-Thomas is a Welsh politician, representing the Dwyfor Meirionnydd constituency in the Senedd. Born in Carmarthen, Wales, he was raised in Ceredigion and the Conwy Valley. He represented Merioneth, then Meirionnydd Nant Conwy constituencies as a Member of Parliament from 1974 to 1992 and was the Llywydd of the Senedd from its inception in 1999 to 2011. He is a member of the House of Lords, a former leader of Plaid Cymru, and, since 2004, a privy counsellor. On 14 October 2016 he left the party in order to support the Welsh Government and now sits as an independent in the Senedd. In November 2017, he joined the Welsh Government. He is the Deputy Minister for Culture, Sport and Tourism.

Gruffudd Leiaf was a 15th-century Welsh poet, known almost exclusively from his works. He was reputed to descend from the royal family of Gwynedd.

Dafydd ap Llewelyn ap Hywel, better known as Dafydd Gam, anglicized to David or Davy Gam, was a Welsh warrior, a prominent opponent of Owain Glyndŵr. He died at the Battle of Agincourt fighting for Henry V, King of England in that victory against the French.