Big Brother Australia

Big Brother Australia (also known simply as Big Brother) is an Australian reality show based on the international Big Brother format created by John de Mol.

Following the premise of other versions of the format, the show features a group of contestants, known as "housemates" who live together in a specially constructed house that is isolated from the outside world. The housemates are continuously monitored during their stay in the house by live television cameras as well as personal audio microphones. Throughout the course of the competition, housemates are evicted from the house - eliminated from the competition. The last remaining housemate wins the competition and is awarded a cash prize.

Big Brother was produced from 2001 and ran for eight seasons and a Celebrity edition on Network Ten before the network cancelled it in July 2008 after experiencing audience erosion and controversy. Big Brother returned in 2012 on the Nine Network. The twelfth season aired in 2020. The series was renewed for a 13th season in June 2020.

The Ten and Nine iterations of the series used a compound located at the Dreamworld theme park, on the Gold Coast, Queensland, as the Big Brother House. It has since been abandoned and vandalised. In June 2019, the house was set ablaze and burnt down entirely. A new Big Brother House located on Sydney Harbour's North Head is used for Seven's iteration of the series in season 12, although this house has since been pulled down following season 13. The following VIP season was filmed at a newly built compound in Sydney Olympic Park. The upcoming Season 14 was too filmed at this location.