P. T. Barnum, American businessman and politician, co-founded The Barnum & Bailey Circus (born 1810)

Phineas Taylor Barnum was an American showman, businessman, and politician remembered for promoting celebrated hoaxes and founding with James Anthony Bailey the Ringling Bros. and Barnum & Bailey Circus. He was also an author, publisher, and philanthropist, although he said of himself: "I am a showman by profession ... and all the gilding shall make nothing else of me." According to Barnum's critics, his personal aim was "to put money in his own coffers". The adage "there's a sucker born every minute" has frequently been attributed to him, although no evidence exists that he had coined the phrase.

The Ringling Bros. and Barnum & Bailey Circus, also known as the Ringling Bros. Circus, Ringling Bros., the Barnum & Bailey Circus, Barnum & Bailey, or simply Ringling, is an American traveling circus company billed as The Greatest Show on Earth. It and its predecessor have run shows from 1871, with a hiatus from 2017 to 2023. They operate as Ringling Bros. and Barnum & Bailey. The circus started in 1919 when the Barnum & Bailey's Greatest Show on Earth, a circus created by P. T. Barnum and James Anthony Bailey, was merged with the Ringling Bros. World's Greatest Shows. The Ringling brothers purchased Barnum & Bailey Ltd. in 1907 following Bailey's death in 1906, but ran the circuses separately until they were merged in 1919.