Ayeyarwady Region (, ; formerly Ayeyarwady Division and Irrawaddy Division) is a region of Myanmar, occupying the delta region of the Ayeyarwady River (Irrawaddy River). It is bordered by Bago Region to the north, Bago Region and Yangon Region to the east, and the Bay of Bengal to the south and west. It is contiguous with the Rakhine State in the northwest.