Bigg Boss 4 is the fourth season of Indian reality TV show Bigg Boss, which aired on Colors TV from 3 October 2010. This season was longer than its predecessor, Bigg Boss 3 and lasted for 14 weeks ending on 8 January 2011. Salman Khan joined the show for the first time as host and has subsequently hosted all the following seasons. This season became the highest-rated season with the finale TRP reaching 6.2 and the average TRP being 4.8.

Bigg Boss is an Indian television reality show of the Bigg Boss franchise which airs on Colors TV in India. It follows the format of the Dutch reality game show, Big Brother, which was first developed by Endemol in the Netherlands. Over 17 years, the show has rolled out seventeen seasons and two spin-off versions.