Big Brother (Australian TV series)

Big Brother
The season 16 eye
GenreReality television
Based onBig Brother
by John de Mol Jr.
Presented by
Narrated by
Country of originAustralia
Original languageEnglish
No. of seasons16 (regular seasons)
2 (celebrity seasons)
No. of episodes1,669
Production
Executive producersPeter Abbot (2001–2003)
Kris Noble (2004–2007)
Virginia Hodgson (2008)
Alex Mavroidakis (2012–2014)
Amelia Fisk (2020–2023)
Sarah Thornton (2025)
Production companies
Original release
NetworkNetwork Ten
Release24 April 2001 (2001-04-24) –
21 July 2008 (2008-07-21)
NetworkNine Network
Release13 August 2012 (2012-08-13) –
26 November 2014 (2014-11-26)
NetworkSeven Network
Release8 June 2020 (2020-06-08) –
6 December 2023 (2023-12-06)
NetworkNetwork 10
Release9 November 2025 (2025-11-09) –
present
Related
Celebrity Big Brother
Big Brother VIP
Infobox instructions (only shown in preview)

Big Brother (also known as Big Brother Australia) is an Australian reality show based on the international Big Brother format created by John de Mol Jr.. 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. The series is named after the fictional totalitarian dictator from George Orwell's 1949 novel Nineteen Eighty-Four.

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. Nine's iteration of the series lasted 3 seasons and was not renewed beyond 2015. Each of the first eleven previous seasons was produced by Endemol Australia and Endemol Southern Star.

In 2019, the Seven Network picked up the series, which was produced by Endemol Shine Australia. This iteration of the series was pre-recorded and featured a revamped competitive format, based on the American version of Big Brother and ran for four regular seasons (including a special edition featuring new and returning housemates in commemoration of the show's 21st anniversary in 2022) as well as a celebrity edition titled Big Brother VIP. As a result of a poor reception to the 15th season, a planned 16th season (and the fifth to be aired by Seven) that was announced for 2024 did not eventuate.

On 16 September 2024, it was confirmed that Network 10 would be reviving Big Brother for its sixteenth season in November 2025, returning to the original live format with live nominations and evictions, with evictions decided by viewers and a 24/7 live stream, with Endemol Shine Australia set to produce.