Roy Horn was a German-American entertainer and animal trainer best known as one half of the legendary Las Vegas magic duo Siegfried & Roy. Born Uwe Ludwig Horn on October 3, 1944, in Nordenham, Germany, he rose to become one of the most recognizable performers in the world, celebrated for his flamboyant stage presence and his work with white lions and white tigers.

Horn met Siegfried Fischbacher in 1959 while both were working aboard a cruise ship. The two quickly formed a personal and professional partnership, with Siegfried serving as the magician and Roy as the animal trainer. They began performing together on ships and in European clubs and theaters, steadily building a reputation for their elaborate illusions and exotic animals. In 1967, the duo was invited to perform in Las Vegas, marking the beginning of a decades-long residency that would define their careers.

Starting in 1990, Siegfried & Roy headlined a spectacular show at The Mirage in Las Vegas. Their act combined grand illusions with the rare appearance of white lions and white tigers, all presented in Liberace-style costumes that became a signature of their brand. By 1999, the show had grossed an estimated $500 million, making them the highest-paid entertainers in Las Vegas. Over the course of their career, the pair performed approximately 5,750 shows together.

Their performing career came to an abrupt end in 2003 when Horn was critically injured by a tiger during a live performance. The incident left him partially paralyzed and effectively ended the duo's stage career. Despite the accident, Horn remained a beloved figure in Las Vegas and continued to make occasional public appearances.

Roy Horn died on May 8, 2020, from complications related to COVID-19. His partner, Siegfried Fischbacher, passed away on January 13, 2021, from pancreatic cancer. Together, they left behind a legacy as one of the most successful and recognizable entertainment acts in Las Vegas history.

While Siegfried & Roy promoted animal conservation and the rehabilitation of endangered species, their use of animals in performances drew criticism from animal rights advocates, who argued that the animals were treated as props and kept in unnatural environments. Nonetheless, their impact on the entertainment industry and the city of Las Vegas remains significant.