Korah, son of Izhar, is an individual who appears in the Biblical Book of Numbers of the Old Testament and four different verses in the Quran, known for leading a rebellion against Moses. Some older English translations, as well as the Douay–Rheims Bible, spell the name Core, and many Eastern European translations have "Korak" or "Korey".

The Book of Numbers is the fourth book of the Hebrew Bible and the fourth of five books of the Jewish Torah. The book has a long and complex history; its final form is possibly due to a Priestly redaction of a Yahwistic source made sometime in the early Persian period. The name of the book comes from the two censuses taken of the Israelites.