Big Brother 5 (Australia)

Big Brother Australia 2005, also known as Big Brother 5, was the fifth season of the Australian reality television series Big Brother Australia, and was aired on Network Ten in Australia, and TV-2 in New Zealand with a four-week delay. The series started on 8 May 2005, with housemates going into the House the day before, and finished on 15 August 2005, lasting 101 days. The theme for this season was "single, sexy, and competitive". Auditions for housemates were held in March 2005. In a departure from usual procedure, candidates were not required to send in videos of themselves as had been the case for prior auditions. Instead, the producers toured major Australian cities and conducted interviews.

The winner of this season was Joel Greiner.

This season was preceded by season four and followed by season six.

=Housemates=

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