Elijah or Elias (Hebrew: אליהו, Eliyahu; Arabic:إلياس, Ilyās) meaning "Yahweh is God" was a prophet in Israel in the 9th century BCE. He appears in the Hebrew Bible, Talmud, Mishnah, Christian Bible, and the Qur'an. According to the Books of Kings, Elijah raised the dead, brought fire down from the sky, and ascended into heaven by a whirlwind. In the New Testament, both Jesus and John the Baptist are on some occasions thought to be Elijah. He is also one of two prophets Old Testament figures (along with Moses) who appears and converses with Jesus on Mount Hermon during the Transfiguration.

Elijah is invoked (not in the "magical" sense) weekly at the Havdalah ritual that marks the end of Shabbat, and in other Jewish customs, among them the Passover seder. Based on a prophecy in Malachi, many Jews await his return as precursor to the coming of the Messiah. In Eastern Europe, he is known as "Elijah the Thunderer" and is blamed in folklore for poor weather.