Hossein Khosrow Ali Vaziri (March 15, 1942 – June 7, 2023), better known by his ring name the Iron Sheik, was an Iranian and American professional wrestler, amateur wrestler, and actor. To date he is the only Iranian-born champion in WWE history, having won the WWF World Heavyweight Championship in 1983.

Vaziri's career peaked during the 1980s WWF wrestling boom, and his rivalry with Hulk Hogan turned Hogan into one of the greatest television heroes of the decade. He later formed a tag team with Nikolai Volkoff, which won the WWF Tag Team Championship at the inaugural WrestleMania event. In 2005, he was inducted into the WWE Hall of Fame.

A heel throughout the 1980s, Sheik later gained popularity on the Kidd Chris show, The Howard Stern Show, Opie and Anthony, and the Internet due to his shoot interviews, vulgar language, and apparent intense dislike for some of his fellow professional wrestlers, particularly Hogan and Brian Blair; however, the true nature of his relationship with Hogan has been a subject of debate.