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Sir Alfred Cooper (28 January 1838 – 3 March 1908) was a fashionable English surgeon and clubman of the late 19th century whose patients included Albert Edward, Prince of Wales.

Cooper was born in Bracondale, Norfolk, England, the son of William Cooper, barrister, by his wife Anna, née Marsh. He was educated at Merchant Taylors' School. As a doctor and surgeon, his speciality was in venereal disease, which gave him an unusual degree of access to, and perspective on, late Victorian aristocrats and their notions of morality.

He was appointed a Surgeon-Lieutenant-Colonel to the Loyal Suffolk Hussars on 17 May 1899. The Hussars was a Yeomanry regiment, which was embodied for active service in South Africa during the Second Boer War (1899–1902). Cooper was the senior medical officer to the regiment until he resigned his commission on 8 November 1902.

He was knighted for services to medicine in the 1902 Coronation Honours, receiving the accolade from King Edward VII at Buckingham Palace on 24 October that year.