Prince Arthur, Duke of Connaught and Strathearn (Arthur William Patrick Albert; 1 May 1850 – 16 January 1942), was the seventh child and third son of Queen Victoria and Prince Albert. He served as the Governor General of Canada, the tenth since Canadian Confederation and the only British prince to do so. In 1910 he was appointed Grand Prior of the Order of St John and held this position until 1939.

Arthur was educated by private tutors before entering the Royal Military Academy, Woolwich at 16 years old. Upon graduation, he was commissioned as a lieutenant in the British Army, where he served for some 40 years, seeing service in various parts of the British Empire. During this time he was also created a royal duke, becoming the Duke of Connaught and Strathearn, as well as the Earl of Sussex. In 1900 he was appointed as Commander in Chief of the British Army in Ireland, which he regretted; his preference being to join the campaign against the Boers in South Africa. In 1911, he was appointed as Governor General of Canada, replacing the Earl Grey as viceroy. He occupied this post until he was succeeded by the Duke of Devonshire in 1916. He acted as the King's, and thus the Canadian Commander-in-Chief's, representative through the first years of the First World War.

After the end of his viceregal tenure, Arthur returned to the United Kingdom and there, as well as in India, performed various royal duties, while also again taking up military duties. Though he retired from public life in 1928, he continued to make his presence known in the army well into the Second World War, before his death in 1942. He was Queen Victoria's last surviving son.