Irrawaddy or Ayeyarwady may refer to:

• Irrawaddy River, the main river of Burma
• Irrawaddy Delta, a rice growing region of the country
• Irrawaddy, an alternative spelling of Ayeyarwady Region, an administrative division of Burma
• The Irrawaddy, a Burmese news publication based in Chiang Mai, Thailand
• Irrawaddy dolphin, a dolphin which is found in the Irrawaddy River
• "Waters of Irrawaddy", the first song in Beyond Rangoon (soundtrack), composed by Hans Zimmer
• Irrawaddy Green Towers, a mobile phone tower company which works for the military joint venture Mytel

• Iravati River (disambiguation), alternative form of the river's name
• Iravati, a character in Hindu mythology, mother of the elephant Airavata