William Ambrose Bebb (4 July 1894 – 27 April 1955) was a Welsh language critic, author and politician.
A co-founder of Plaid Cymru, Bebb took a keen interest in politics and was influenced by Charles Maurras of the Action Française movement. With the outbreak of the Second World War, Bebb became a vocal proponent of the War Effort against Nazi Germany, and considered Germany's total defeat "essential". In the 1945 General Election Mr Bebb stood for the Plaid Cymru in the seat of Caernarvonshire, and came in third place.
- Llydaw (1929)
- Ein Hen Hen Hanes
- Llywodraeth y Cestyll (1934)
- Crwydro'r Cyfandir (1936)
- Y Ddeddf Uno 1536 (1937)
- Cyfnod y Tuduriaid (1939)
- Dydd-lyfr Pythefnos neu Y Ddawns Angau
- 1940 Lloffion o Ddyddiadur
- Y Baradwys Bell (1941)
- Pererindoddau (1941)
- Dyddlyfr 1941
- Gadael Tir
- Dial y Tir (1945)
- Calendr Coch (1946)
- Machlud yr Oesoedd Canol (1951)
- Machlud y Mynachlogydd
- Yr Argyfwng
- Griffiths, Richard (2004) "Another Form of Fascism: The Cultural Impact of the French 'Radical Right' in Britain" in Gottlieb, Julie V. (ed.) Culture of Fascism: Visions of the Far Right in Britain I. B. Tauris & Co., London, ISBN 1-4175-1621-6 pp. 174-175
- A History of Wales, by John Davies, page 599
- "'First 11' of new Welsh MPs start". BBC News. 18 May 2010.
- Meils, Gareth (May 1977) "Ambrose Bebb" Planet Gwasg Gomer, Llangeitho, Tregaron, Cardiganshire, Wales, 37/38: pp. 70–79.