Havemeyer, Henry Osborne (hăvˈəmĪˌyər) [key], 1847–1907, American industrialist, b. New York City. He inherited large family interests in sugar refining and, with his brother Theodore, expanded them. At his death his American Sugar Refining Company controlled about half the sugar refining of the country. A large part of his notable art collection was bequeathed in 1929 by his widow to the Metropolitan Museum of Art.