Henry Nathaniel Andrews, Jr. (born June 15, 1910, Melrose, Massachusetts; d. March 3, 2002 Concord, New Hampshire) was an American paleobotanist recognized as an expert in plants of the Devonian and Carboniferous periods. He was a fellow of the Geological Society of America and the American Association for the Advancement of Science and was elected into the U.S. National Academy of Sciences in 1975. He was a professor at the Washington University in St.