2 Kings 9 is the ninth chapter of the second part of the Books of Kings in the Hebrew Bible or the Second Book of Kings in the Old Testament of the Christian Bible. The book is a compilation of various annals recording the acts of the kings of Israel and Judah by a Deuteronomic compiler in the seventh century BCE, with a supplement added in the sixth century BCE. This chapter records Jehu's anointing as the next king of Israel and his assassinations of Jehoram the king of Israel, Ahaziah the king of Judah and Jezebel the queen mother of Israel. The narrative is a part of a major section 2 Kings 9:1–15:12 covering the period of Jehu's dynasty.