Big Brother 1

Big Brother 1 or Big Brother (season 1) is the first season of various versions of Big Brother and may refer to:


 * Big Brother (Albanian season 1), the 2008 Albanian edition of Big Brother
 * Big Brother (Australian season 1), the 2001 Australian edition of Big Brother
 * Big Brother (British series 1), the 2000 UK edition of Big Brother
 * Big Brother (Croatian season 1), the 2004 Croatian edition of Big Brother
 * Big Brother (Dutch season 1), the 1999 Dutch edition of Big Brother
 * Big Brother (Finnish season 1), the 2005 edition of Big Brother in Finland
 * Big Brother (German season 1), the 2000 German edition of Big Brother
 * Big Brother (Greek season 1), the 2001 Greek edition of Big Brother
 * Big Brother (Israeli season 1), the 2008 edition of Big Brother in Israel
 * Big Brother (Serbian season 1), the 2006 edition of Big Brother in Serbia, Bosnia and Herzegovina, and Montenegro
 * Big Brother (Slovenian season 1), the 2007 Slovenian edition of Big Brother
 * Big Brother 1 (American season), the 2000 U.S. season of Big Brother
 * Big Brother 1 (Bulgarian season), the 2004-2005 Bulgarian edition of Big Brother
 * Big Brother 1 (Romania), the 2003 Romanian edition of Big Brother
 * Big Brother 1 (Indonesia), the 2011 season of Big Brother in Indonesia
 * Big Brother 1 (Ukraine), the 2011 edition of Big Brother in Ukraine
 * Big Brother Africa (season 1), the 2003 African edition of Big Brother
 * Big Brother Canada (season 1), the English-Canadian 2013 edition of Big Brother
 * Big Brother Thailand (season 1), the 2005 Thai edition of Big Brother
 * Big Brother Brasil 1, the 2002 Brazilian edition of Big Brother
 * Pinoy Big Brother: Season 1, the 2005 edition of Big Brother in the Philippines