Duke of Connaught and Strathearn was a title in the Peerage of the United Kingdom that was granted on 24 May 1874 by Queen Victoria of the United Kingdom of Great Britain and Ireland to her third son, Prince Arthur. At the same time, he was also granted the subsidiary title of Earl of Sussex.

Prince Arthur, Duke of Connaught and Strathearn was the seventh child and third son of Queen Victoria of the United Kingdom and Prince Albert of Saxe-Coburg and Gotha. He served as Governor General of Canada, the tenth since Canadian Confederation and the only British prince to do so.