Alexander Bannerman Warburton (April 5, 1852 – January 14, 1929) was a politician, jurist and author, who served as the seventh premier of Prince Edward Island, Canada. Alexander was born in Summerside, the son of James Warburton, who was a member of the provincial assembly. Named after Lieut. Governor, Sir Alexander Bannerman, he was educated in Summerside, at St. Dunstan's College, King's College in Nova Scotia and the University of Edinburgh. He was called to the bar in 1879. He was a director for the Patriot Publishing Company and the Eastern Assurance Company of Canada.