“Survivor” host Jeff Probst lost a family member … his brother, Scott Probst, is dead.

Scott’s death was announced Monday by their brother, Brent … in a social media post, he says … “Some sad news, our brother Scott is no longer with us. He was a great brother, son and friend. I will miss him so much ❤️ I’m so sad he is gone.”

The cause and manner of death is unclear.

Jeff hosted “Survivor” since 2000 and Scott has credits on a handful of episodes … as a camera assistant and an art assistant.

It’s the second death in Jeff’s immediate family in less than two years … his mother, Barb Probst, died back in November 2024 and the reality survival competition show honored her with a tribute card in a season 47 episode.

Scott was 58.