Big Brother (Israeli TV series) season 12, also known as HaAh HaGadol 2022, was the twelfth season of the Israeli reality television series Big Brother. The series is based on the international Big Brother format, which originated in the Netherlands, and involves a group of contestants, known as "houseguests," living together in a custom-built house, isolated from the outside world. They are continuously monitored by cameras and microphones, and viewers vote to evict contestants until a winner is determined.
The twelfth season premiered on July 13, 2022, and concluded on December 5, 2022. It aired on Reshet 13, marking its fifth season on the network after moving from Channel 2 (later Keshet 12) in 2017. The season was hosted by Liron Weizman and Guy Zu-Aretz.
Throughout its run, Big Brother (Israeli TV series) season 12 featured 16 initial houseguests, with several more entering later as the season progressed. The season spanned approximately 146 days. The grand finale saw Talya Ovadia emerge as the winner, securing the grand prize, while Shai Haimovich was the runner-up. Ovadia's victory marked a significant moment as she was the first female winner of the Israeli edition since the inaugural season.