Oman, officially known as the Sultanate of Oman, is a country located on the southeastern coast of the Arabian Peninsula in Western Asia. It is bordered by the United Arab Emirates to the northwest, Saudi Arabia to the west, and Yemen to the southwest, and is surrounded by the Arabian Sea to the south and east. Oman had a population of 4,520,471 in 2021. Muscat is the nation's capital and largest city.