Big Brother 13

Big Brother 13 is the thirteenth season of various versions of Big Brother and may refer to:


 * Big Brother 13 (U.S.), the 2011 edition of the U.S. version of Big Brother
 * Gran Hermano 13 (Spain), the 2012 edition of the Spain version of Big Brother
 * Big Brother 13 (UK), the 2012 edition of the UK version of Big Brother
 * Big Brother Brasil 13, the 2013 edition of the Brazil version of Big Brother
 * Bigg Boss 13, thirteenth season of Big Brother in India in Hindi