Henry Janeway Hardenbergh (February 6, 1847 – March 13, 1918) was an American architect, best known for his hotels and apartment buildings, and as a "master of a new building form — the skyscraper." He worked three times with Edward Clark, the wealthy owner of the Singer Sewing Machine Company and real estate developer: The Singer company's first tower in New York City, the Dakota Apartments, and its precursor, the Van Corlear. He is best known for building apartment dwellings and luxury hotels.