Morrill Wyman (July 25, 1812 in Chelmsford, Massachusetts – January 30, 1903 in Cambridge, Massachusetts) was an American physician and social reformer. Best known today for his work on hay fever, he was one of the most respected doctors of his time, a social reformer, Harvard overseer, hospital president, and author in his long lifetime. Another brother, Edward Wyman (1818 - 1899), was a prominent merchant and the captain of the Ancient and Honorable Artillery Company of Massachusetts.