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. Nine’s iteration of the series lasted 3 seasons and was not renewed beyond 2015. In 2019 the Seven Network picked up the series, which is produced by Endemol Shine Australia. All eleven previous seasons were produced by Endemol Australia and Endemol Southern Star. The twelfth season aired in 2020. The series was renewed for a 13th season in June 2020. Seven has also commissioned a new celebrity edition titled Big Brother VIP to air on 1 November 2021.

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. The entire compound was demolished by Dreamworld in August 2019. 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.

Big Brother AU All Seasons
Big Brother AU Season 14

Episode 01 | Episode 02 | Episode 03 | Episode 04 | Episode 05 | Episode 06 | Episode 07 | Episode 08 | Episode 09 | Episode 10 | Episode 11 | Episode 12 | Episode 13 | Episode 14 | Episode 15 | Episode 16 | Episode 17 | Episode 18 | Episode 19 | Episode 20 | Episode 21 | Episode 22 | Episode 23 | Episode 24 | Episode 25 | Episode 26 | Episode 27 | Episode 28 | Episode 29 | Episode 30 | Episode 31

Big Brother AU Season 15

Episode 01 | Episode 02 | Episode 03 | Episode 04 | Episode 05 | Episode 06 | Episode 07 | Episode 08 | Episode 09 | Episode 10 | Episode 11 | Episode 12 | Episode 13 | Episode 14 | Episode 15 | Episode 16 | Episode 17 | Episode 18 | Episode 19 | Episode 20 | Episode 21 | Episode 22 | Episode 23 | Episode 24 | Episode 25 | Episode 26 | Episode 27 | Episode 28 | Episode 29 | Episode 30 | Episode 31

Big Brother AU Season 03
Big Brother AU Big Brother AU Season 15 Reality

Big Brother AU Season 15 Episode 21 Watch Free Online

Big Brother AU Season 15 Episode 21 Description the housemates, grouped in pairs, had to draw portraits of each other while being electrocuted. The pair that draws the best drawings of each other would earn a special dinner from Big Brother, while all of the losing contestants would be indefinitely confined to one another. Big […]

Big Brother AU Season 03
Big Brother AU Big Brother AU Season 15 Reality

Big Brother AU Season 15 Episode 23 Watch Free Online

Big Brother AU Season 15 Episode 23 Description Big Brother brings the housemates’ loved ones into the house. After a tearful welcome they update their loved ones on the Big Brother journey before mingling with the other housemates’ families. Big Brother AU All Seasons Big Brother AU Season 15 Big Brother AU Season 14 Episode […]

Big Brother AU Season 03
Big Brother AU Big Brother AU Season 15 Reality

Big Brother AU Season 15 Episode 13 Watch Free Online

Big Brother AU Season 15 Episode 13 Description At just over the halfway point, housemates are well adjusted to life locked away from the outside world… Sleeping peacefully… until they receive a Big Brother wakeup call. Big Brother AU All Seasons Big Brother AU Season 15 Big Brother AU Season 14 Episode 01 | Episode […]

Big Brother AU Season 03
Big Brother AU Big Brother AU Season 15 Reality

Big Brother AU Season 15 Episode 01 Watch Free Online

Big Brother AU Season 15 Episode 01 Description episode introduced the 14 housemates, who are all single and looking for love, and the host Sonia Kruger. The episode also featured the first challenge, where the housemates had to pair up and race across a slippery slope, while avoiding obstacles and water cannons. The winning pair […]

Big Brother AU Season 03
Big Brother AU Big Brother AU Season 15 Reality

Big Brother AU Season 15 Episode 02 Watch Free Online

Big Brother AU Season 15 Episode 02 Description The second episode of Big Brother AU Season 15 aired on November 7, 2023, on Seven Network. The episode continued from the cliffhanger of the first episode, where the housemates had to vote for the first evictee. The episode also featured the second challenge, where the housemates […]

Big Brother AU Season 03
Big Brother AU Big Brother AU Season 15 Reality

Big Brother AU Season 15 Episode 18 Watch Free Online

Big Brother AU Season 15 Episode 18 Description The housemates are sleeping soundly until Sonia unexpectedly enters the bedroom with a megaphone and wakes the sleeping housemates up to send them straight to the eviction room. Big Brother AU All Seasons Big Brother AU Season 15 Big Brother AU Season 14 Episode 01 | Episode […]