William Frederick Waldegrave, Viscount Chewton (29 June 1816, Cardington, Bedfordshire – 8 October 1854) was a British army officer. Waldegrave was the eldest son of Hon. William Waldegrave and was educated at Cheam School. While still at school, he served as a midshipman aboard his father's ship, HMS Seringapatam from 1829–31 and later graduated from Trinity College, Cambridge in 1837. He then emigrated to Canada and served with the militia which put down the rebellions of 1837 and returned to Britain in 1843 and served with the British Army.