Big Brother 4 (Australia)

Big Brother 2004, also known as Big Brother 4, was the fourth season of the Australian reality television series Big Brother Australia, and was aired on Network Ten, starting on Sunday 2 May 2004, with the housemates entering the day before, and ended on Monday 26 July 2004, lasting 86 days. The season was billed as "back to basics, but with one small secret". In a return to the basic format of Big Brother 1 (Australia) and Big Brother 2 (Australia) that had been eschewed in favour of twists and surprises in Big Brother 3 (Australia), all housemates were let into the house together and former surprise elements such as swimming pools and gym equipment were all exposed from the beginning.

The only main twist of the series was the prize money - which was raised from $250,000 to $1,000,000, but this was kept hidden from housemates until later in the season. Evicted housemates also received larger prizes than any season before, with every evictee receiving a top of the range Mitsubishi Lancer VR-X.

Two Intruders entered the house later in the game. Mid-season, the housemates were able to see the unofficial premiere of The Day After Tomorrow.

The winner of this season was TBA.

This season was preceded by season three and followed by season five.

=Housemates=

Nominations table
The first housemate in each box was nominated for two points, and the second housemate was nominated for one point.