HaAh HaGadol 13 (Hebrew: האח הגדול 13; lit.

The Big Brother 13) is the Israeli version of the reality television show Big Brother.

The twelfth season premiered on May 30, 2023, on Israeli broadcast channel Reshet 13.

16 housemates entered the house on day one, and further participants entered on days three, six, forty and forty-seven.