Big Brother or Big Brother Sverige was the Swedish version of the Big Brother reality television franchise created by producer John de Mol Jr. in 1999. The show followed a number of contestants, known as housemates, who were isolated from the outside world for an extended period of time in a custom-built house. Each week, one of the housemates was evicted by a public vote, with the last housemate remaining winning a cash prize.

The show aired in 2000 and again from 2002 to 2004 on Kanal 5, from 2011 to 2012 and 2015 on Kanal 11, and finally on Sjuan from 2020 to 2021. The show was brought to an end when TV4 cancelled Big Brother Sverige on Christmas Eve in 2021, after 9 seasons and 913 episodes, due to low ratings.