A'ana, Samoa Aargau, Switzerland Abia, Nigeria Abidjan, Côte d'Ivoire Abkhazia, Georgia Abra, Philippines Abruzzo, Italy Absheron, Azerbaijan Abu Dhabi, United Arab Emirates Abyan, Yemen Aceh, Indonesia Acklins, Bahamas Acoua, Mayotte Acquaviva, San Marino Acre, Brazil Ad Dakhliyah, Oman Ad Daqahliyah, Egypt Ad Dawhah, Qatar Adamaoua, Cameroon Adamawa, Nigeria Adana, Turkey Addis Abeba, Ethiopia Adiyaman, Turkey Adjumani, Uganda Adrar, Algeria Adrar, Mauritania Adygey, Russia Aegean, Greece Aerodrom, Macedonia Afar, Ethiopia Afyon, Turkey Agadez, Niger Agalega Islands, Mauritius Agana Heights, Guam Agat, Guam Agri, Turkey Aguascalientes, Mexico Agusan del Norte, Philippines Agusan del Sur, Philippines Ahal, Turkmenistan Ahuachapán, El Salvador Aichi, Japan Aiga-i-le-Tai, Samoa Aileu, Timor-Leste Aimeliik, Palau Aïn Defla, Algeria Aïn Témouchent, Algeria Ainaro, Timor-Leste Airai, Palau Aisén del General Carlos Ibáñez del Campo, Chile