Capital Saudi Arabia is the official name of the country located in the Middle East. The capital city of Saudi Arabia is Riyadh, which has a population of over 6 million people. Riyadh is the largest city in Saudi Arabia and is the political and economic center of the country. It is home to many government offices, embassies, and other important institutions. Riyadh is also known for its traditional architecture, vibrant culture, and modern infrastructure.