Henry Lascelles, 6th Earl of Harewood

British soldier, peer and landowner (1882–1947)

Henry George Charles Lascelles, 6th Earl of Harewood (9 September 1882 – 24 May 1947), known by the courtesy title of Viscount Lascelles until 1929, was a British soldier and peer. He was the husband of Mary, Princess Royal, and thus a son in law of King George V and Queen Mary and a brother in law to kings Edward VIII and George VI.

After education at Eton College, Lascelles attended the Royal Military College, Sandhurst serving until 1905. He was an honorary attache at the British embassy in Paris from 1905 until 1907, then served as aide de camp to the governor general of Canada, Earl Grey, until 1911. Postwar he was promoted major in 1920 and retired in 1924. Meanwhile, at the front, he was wounded in the head at the Second Battle of Givenchy but recovered to fight in the Battle of Loos in 1915, and was wounded a further two times as well as gassed.

After the war, Lascelles remained interested in local Yorkshire issues and events, often contributing to the Leeds Board of Management. He was president of the Yorkshire Rural Community Council. He was Lord Lieutenant of the West Riding of Yorkshire from 1927 until his death.

As Viscount Lascelles, he attempted to enter the House of Commons in 1913. He stood as the Unionist candidate in the 1913 Keighley by election. (The Liberal incumbent, Sir Stanley Buckmaster, had been appointed Solicitor General.) In the three cornered fight that also included a Labour candidate, he came second to Buckmaster by 878 votes. He did not seek election again, and his defeat led to a later distaste for politics. He declared in later life "every war in which Britain had been involved had been due to the inefficiency of politicians, and they began what soldiers had to end". In the 2019 film Downton Abbey, Viscount Lascelles is played by Andrew Havill.