Dubai. / 25.26306°N 55.29722°E / 25.26306; 55.29722. Dubai ( / duːˈbaɪ /, doo-BY; Arabic: دبي, romanized : Dubay, IPA: [dʊˈbajj], Gulf Arabic pronunciation: [dəˈbaj]) is the most populous city in the United Arab Emirates (UAE) and the capital of the Emirate of Dubai, the most populated of the 7 emirates of the United Arab