Official nameSaltanat ‘Uman (Sultanate of Oman)CapitalMuscatPopulation estimate (2015)4·49 millionInternet domain extension.omCurrencyThe unit of currency is the Rial Omani (OMR), which consists of 1,000 baiza.TerritorySituated at the south-east corner of the Arabian peninsula, Oman is bounded in the north-east by the Gulf of Oman and south-east by the Arabian Sea, south-west by Yemen and north-west by Saudi Arabia and the United Arab Emirates.LanguagesThe official language is Arabic; English is in commercial use.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words