Aten also Aton, Atonu, or Itn was the focus of Atenism, the religious system formally established in ancient Egypt by the late Eighteenth Dynasty pharaoh Akhenaten. Exact dating for the 18th dynasty is contested, though a general date range places the dynasty in the years 1550 to 1292 B.C.E. The worship of Aten and the coinciding rule of Akhenaten are major identifying characteristics of a period within the 18th dynasty referred to as the Amarna Period.

फारो अखेनातेन ने मिस्र के प्राचीन धर्म पर प्रतिबन्ध लगाया और केवल अतेन नामी सूर्य की चक्रिका की उपासना का आदेश दिया।