Algernon Foster Vandeventer (1862 – November 5, 1931) was an American politician. He was a son of John Finley Vandeventer and Sarah C. Bowers, and a distant relative of Supreme Court Justice Willis Van Devanter. He was a member of the Arkansas House of Representatives, serving from 1897 to 1901. He was a member of the Democratic party. After serving in the Arkansas Legislature, he moved to Oklahoma and served in the Oklahoma House of Representatives and Oklahoma Senate.