Frank Wakeley Gunsaulus (January 1, 1856 – March 17, 1921) was a noted preacher, educator, pastor, author and humanitarian. Famous for his "Million Dollar Sermon" which led Philip Danforth Armour to donate money to found Armour Institute of Technology where Gunsaulus served as president for its first 27 years. Gunsaulus lived in Chicago for 34 years where he was pastor of Plymouth Church (1887–99) and Central Church from 1899 until two years before his death. He was a prominent figure in Chicago's social, educational, and civic improvements. In 1893, he was named first president of Armour Institute of Technology (now Illinois Institute of Technology). His extraordinary energy, masterful oratory skills, and intellectual talents influenced the city's spiritual, educational, cultural, and civ