Big Brother 23 (American season)

Big Brother 23 is the twenty-third season of the American reality television program Big Brother. The season premiered on July 7, 2021, on CBS in the United States and Global in Canada. Hosted by Julie Chen Moonves, the show follows a group of contestants (known as HouseGuests), who live in a house together while being constantly filmed and having no communication with the outside world as they compete to win a grand prize of $750,000.

The season concluded on September 29, 2021, after 85 days of competition. Xavier Prather was crowned the winner after defeating Derek Frazier in an 9-0 jury vote, becoming the first black HouseGuest to win in the main edition of the show. Prather became the third winner in mainline Big Brother US history to win by a unanimous jury vote (following Dan Gheesling of Big Brother 10 and Cody Calafiore of Big Brother 22). Tiffany Mitchell was voted as the season's America's Favorite HouseGuest by the public, winning the $50,000 prize that comes with the award.