The Iran–Saudi Arabia proxy conflict, sometimes also referred to as the Middle Eastern Cold War, is the ongoing struggle for influence in the Middle East and other Muslim regions between Iran and Saudi Arabia. The two countries have provided varying degrees of support to opposing sides in nearby conflicts, including the civil wars in Syria and Yemen; and disputes in Bahrain, Lebanon, and Qatar. It also extends to disputes or broader competition in other regions such as Nigeria, Pakistan, Afghanistan and other parts of North and East Africa, South Asia, Central Asia, Southeast Asia, the Balkans, and the Caucasus.
In what has been described as a cold war, the conflict is waged on multiple levels over geopolitical, economic, and sectarian influence in pursuit of regional hegemony. American support for Saudi Arabia and its allies as well as Russian and Chinese support for Iran and its allies have drawn comparisons to the dynamics of the Cold War era, and the proxy conflict has been characterized as a front in what former Russian Prime Minister Dmitry Medvedev has referred to as the "New Cold War".