Kerach tesha (Hebrew: קרח תשע – "Ice-nine"; pronounced [ˈkeʁaχ ˈteʃa]) is an Israeli Rock band active in the years 1993–2000, and reactivated in 2013.

The name is taken from Kurt Vonnegut's novel Cat's Cradle, where Ice-nine is a material that acts as a seed crystal and causes the solidification of the entire body when it comes in contact with water.

The album produced the hits "Sun" (שמש, "Shemesh") and "My Ex-girlfriend" (החברה שלי לשעבר, "HaKhavera Sheli Leshe'avar").

Assaf Amdursky himself used to play the song in the tour that accompanied his successful album "Silent Engines" (מנועים שקטים, "Meno'im Shketim").

He released three albums: "Human Warmth" (חום אנושי, "Khom Enoshi"), "Help Is On The Way" (עזרה בדרך, "Ezra BaDerekh") and "Iron and Stones" (ברזל ואבנים, "Barzel Ve'Avanim").