Big Brother 13 is the upcoming thirteenth season of the American reality television series Big Brother that will premiere on July 6, 2011 on the CBS television network. The show is produced by Endemol USA and Fly On The Wall Entertainment. The thirteenth season was confirmed on the same day as the finale of Big Brother 12 in a press release issued from CBS.

Pre-season

Casting for Big Brother 13 began in mid-April. Applications and video tape submissions did not have a set deadline. Applicants chosen to be a finalist will go to Los Angeles, CA from which applicants will be narrowed down to a pool of forty finalists. Casting calls will be held around the United States on a later date.