John Ringling, American businessman, co-founded Ringling Brothers Circus (born 1866)

John Nicholas Ringling was an American entrepreneur who is the best known of the seven Ringling brothers, five of whom merged the Barnum & Bailey Circus with their own Ringling Bros. World's Greatest Shows to create a virtual monopoly of traveling circuses and helped shape the modern circus. In addition to owning and managing many of the largest circuses in the United States, he was also a rancher, a real estate developer and art collector. He was inducted into the Florida Artists Hall of Fame in 1987.

Ringling Bros. World's Greatest Shows is a circus founded in Baraboo, Wisconsin, United States in 1884 by five of the seven Ringling brothers: Albert, August, Otto, Alfred T., Charles, John, and Henry. The Ringling brothers were sons of a German immigrant, August Frederick Rüngeling, who changed his name to Ringling once he settled in America. Four brothers were born in McGregor, Iowa: Alf T., Charles, John and Henry. The Ringling family lived in McGregor, Iowa, for twelve years, from 1860 until 1872. The family then lived in Prairie du Chien, Wisconsin, and moved to Baraboo, Wisconsin, in 1875.