In Riyadh, the Gulf Cooperation Council is created between Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and the United Arab Emirates.

The Cooperation Council for the Arab States of the Gulf (Arabic: ), also known as the Gulf Cooperation Council (GCC; Arabic: ), is a regional, intergovernmental, political, and economic union that consists of Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates. The council's main headquarters are located in the city of Riyadh in Saudi Arabia. The Charter of the GCC was signed on 25 May 1981, formally establishing the institution.All current member states are monarchies, including three constitutional monarchies (Qatar, Kuwait, and Bahrain), two absolute monarchies (Saudi Arabia and Oman), and one federal monarchy (the United Arab Emirates, which is composed of seven member states, each of which is an absolute monarchy with its own emir). There have been discussions regarding the future membership of Jordan, Morocco, and Yemen (Yemen being the only country of the Arabian Peninsula not yet a member of the GCC).During the Arab Spring in 2011, Saudi Arabia raised a proposal to transform the GCC into a "Gulf Union" with tighter economic, political and military coordination, regarded as a move to counterbalance the Iranian influence in the region. Objections were raised against the proposal by other countries. In 2014, Bahrain prime minister Khalifa bin Salman Al Khalifa said that current events in the region highlighted the importance of the proposal. The Peninsula Shield Force is the military arm of the GCC, formed in 1984.

Riyadh (Arabic: الرياض, romanized: 'ar-Riyāḍ, lit.: 'The Gardens' [ar.riˈjaːdˤ] Najdi pronunciation: [er.rɪˈjɑːðˤ]) is the capital of Saudi Arabia and one of the largest cities on the Arabian Peninsula. Located in the center of the an-Nafud desert, on the eastern part of the Najd plateau, the city sits at an average of 600 meters (2,000 ft) above sea level, and receives around 5 million tourists each year, making it the forty-ninth most visited city in the world and the 6th in the Middle East. Riyadh had a population of 7.6 million people in 2019, making it the most-populous city in Saudi Arabia, 3rd most populous in the Middle East, and 38th most populous in Asia.The first mentioning of the city by the name Riyadh was in 1590, by an early Arab chronicler. In 1737, Deham Ibn Dawwas, who was from the neighboring Manfuha, settled in and took control of the city. Deham built a wall around the city, and the best-known source of the name Riyadh is from this period, thought to be referring to the earlier oasis towns that predated the wall built by Ibn Dawwas. In 1744, Muhammad ibn 'Abd al-Wahhab formed an alliance with the Emir of Dir'iyah, Muhammad bin Saud, and in 1774, they took Riyadh from Deham. However their state, now known as the First Saudi State, came to a collapse in 1818. Turki ibn Abdullah founded the Second Saudi State in the early 19th century and made Riyadh his capital in 1825. However, his reign over the city was disrupted by a joint Ottoman–Rashidi alliance. Finally, in the early 20th century, 'Abdulaziz ibn Saud, known in the west simply as Ibn Saud, retrieved his ancestral kingdom of Najd in 1902 and consolidated his rule by 1926 with the final Saudi conquest of Hejaz. After this he named his kingdom Saudi Arabia in September 1932 with Riyadh as the capital.Riyadh is the political and administrative center of Saudi Arabia. The Consultative Assembly (also known as the Shura or Shura Council), the Council of Ministers of Saudi Arabia, the King and the Supreme Judicial Council of Saudi Arabia are all situated in the city. Alongside these four bodies that form the core of the legal system of Saudi Arabia, the headquarters of other major and minor governmental bodies are also located in Riyadh. The city hosts 112 foreign embassies, most of which are located in the as-Safarat district or Diplomatic Quarter (Arabic: حي السفارات, romanized: Hayy as-Safarat, lit. 'District of Embassies') in the western reaches of the city.

Riyadh also holds great economic significance, as it hosts the headquarters of many banks and major companies, such as the National Commercial Bank (NCB), Alinma Bank and the Saudi Arabian British Bank (SABB). Highway 65, known locally as the King Fahd Road, runs through some of these important centers in the city, including the King Abdullah Financial District, one of the world's largest financial districts, the Faisaliyah Center and the Kingdom Center. Riyadh is one of the world's fastest-growing cities in population and is home to many expatriates. Riyadh has been designated a global city.The city is divided into 15 municipal districts, which are overseen by the Municipality of Riyadh (Arabic: أمانة الرياض, romanized: Amanat 'ar-Riyāḍ, lit. 'Protectorate of Riyadh') headed by the mayor; and the Royal Commission for Riyadh which is chaired by the Governor of the Province, Faisal bin Bandar Al Saud. As of July 2020, the mayor is Faisal bin Abdulaziz bin Mohammed bin Ayyaf Al-Muqrin.