Ahaziah of Judah or Jehoahaz I (2 Chronicles 21:17; 2 Chronicles 25:23), was the sixth king of Judah, and the son of Jehoram and Athaliah, the daughter (or possibly sister) of king Ahab of Israel. He was also the first Judahite king to be descended from both the House of David and the House of Omri, through his mother and successor, Athaliah.