Addu Atoll also known as Seenu Atoll is the southernmost atoll of the Maldives Addu Atoll together with Fuvahmulah located 40 km north of Addu Atoll extend the Maldives into the Southern Hemisphere Addu Atoll is located 540 km south of Mal 233 the country s capital Administratively Addu Atoll is the location of Addu City one of the two cities of the Maldives