Allen Granberry Thurman, sometimes erroneously spelled Allan Granberry Thurman, was a Democratic U.S. representative, Ohio Supreme Court justice, and Senator from Ohio. He unsuccessfully ran for Vice President of the United States in 1888 with President Grover Cleveland.

The 1888 United States presidential election was the 26th quadrennial presidential election, held on Tuesday, November 6, 1888. Republican nominee Benjamin Harrison, a former U.S. senator from Indiana, defeated incumbent Democratic President Grover Cleveland of New York. It was the third of five U.S. presidential elections in which the winner did not win the national popular vote, which would not occur again until the 2000 US presidential election.