A Fazenda 17 was the seventeenth season of the Brazilian reality television series A Fazenda, which premiered Monday, September 15, 2025, at ( / ) on Record.
Adriane Galisteu returned for her fifth season as the main host, with Lucas Selfie and Márcia Fu also returning as the online host and correspondent and as the host of the comedic eviction-night segment, respectively.
The contestants of A Fazenda 17 were officially revealed during the season premiere on September 15, 2025. Duda Wendling had her entry postponed after being diagnosed with COVID-19 during the sequester period. After recovering, she entered the House on Day 2.
A total of 26 celebrities entered the House, including 24 official contestants and two secret infiltrators, Carol Lekker and Matheus Martins. Each infiltrator believed they were the only one and received secret missions to complete during the first week; failure would result in a R$5.000 deduction from the potential R$50.000 prize for each infiltrator. The contestants voted on who they thought the infiltrator was: if five or more guessed correctly, they would share the R$50.000; otherwise, the infiltrator would claim the prize.
Originally, the infiltrators were set to leave the House and serve as alternates, regardless of whether they were discovered. However, by public vote, Carol and Matheus were allowed to continue in A Fazenda 17 as official contestants after host Adriane Galisteu asked viewers whether they should be given the chance to stay in the game.
Each week, contestants (determined by a random draw) compete in the Fire challenge to win the Lamp power. The Lamp power entitles the holder two flames (Orange and White), which may unleash good or bad consequences on the nomination process, with the Orange flame power defined by the public through the show's profile on R7 among two options.
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All numbers are in points and provided by Kantar Ibope Media.