Big Brother Brazil 5 is the fifth season of Big Brother Brazil.
- Extra Surprise - housemates Marcos and Marielza entered the house on Day 4 and the public was able to choose one of them to be immune. Marielza won the vote with 54%.
- It was the BBB with the highest ratings and repercussion success to date.
- This edition had 15 Housemates, one more than the previous edition.
- Jean, was the winner with 55% of the votes in the final, surpassing Grazielli (40%) and Sammy (5%).
- Jean was also the record holder of Nominations: 5 and was also the most voted in the house with 19 votes.
- Marielza suffered a stroke in the house and had to be withdrawn from the program in the 2nd week.
- Aline entered as her replacement for Marielza.
- This edition had the highest rejection rate of a participant to date: in the wall against Grazielli, Aline was evicted by receiving 95% of the votes.
- Marielza was the oldest participant of this edition, with 46 years.
- Juliana was the youngest participant of this edition, with 18 years.
- Juliana is also the youngest Housemate to enter the house, equaling Elane Silva of the Big Brother Brazil 3.
- The Unbelievable (Rogério, Alan, Giulliano, Paulo André, Aline, Natália, Tatiana and Karla)
- The Defenders (Jean, Grazi, Tatiane Pink e Sammy)