Alexander Hamilton Wallis (March 28, 1872 – July 25, 1959) was an American college football player. He played tackle for the Yale Bulldogs football team of Yale University from 1890 to 1892, and was selected as an All-American in 1892. Wallis was the son of Hamilton Wallis, a prominent lawyer of East Orange, New Jersey. He had a brother, Nathan C. Wallis and a sister, Emeline Waldron Wallis, who married James Carr Dunn of London, England.