Louis Henry Sullivan (1856 - 1924) was an American architect.
Louis Sullivan was born in Boston, studied architecture briefly at the Massachusetts Institute of Technology, and moved to Chicago in 1873. He is associated with the first generation of American skyscrapers, as steel technology allowed taller and more spacious buildings than were previously possible. He was one of the leading figures of the Chicago School of architecture.
He worked with a number of notable architects, including Frank Furness, William Le Baron Jenney, Dankmar Adler and Frank Lloyd Wright.
His buildings include
- Auditorium Building, Chicago (1889)
- Wainwright building, St. Louis (1890)
- Guaranty building, Buffalo (1894)
- Carson, Pirie, Scott store, Chicago (1899)
- National Farmer's Bank, Owatanna, Minnesota (1908)
- Merchants' National Bank, Grinnell, Iowa (1914)
