Alpheus Hyatt Mayor (1901–1980) was an American art historian and curator at the Metropolitan Museum of Art, a leading figure in the study of prints, both old master prints and popular prints. A. Hyatt Mayor's father was marine biologist Alfred Goldsborough Mayor (1868–1922) and his mother was artist and sculptor Harriet Randolph Hyatt Mayor. His grandfather, whose name he carried, was the paleontologist Alpheus Hyatt. Mayor came from an artistic family; his mother's sister was the sculptor Anna Hyatt Huntington, and her husband was art patron Archer Milton Huntington, founder of the Hispanic Society of America in 1904.