Riyadh (/rɪˈjɑːd/; Arabic: الرياض‎, translit. ar-Riyāḍ [ar.riˈjaːdˤ], Najdi pronunciation: [er.rɪˈjɑːðˤ]) an kapitolyo asin pinakamatawong syudad sa Saudi Arabia, haros 790 km (491 mi) norteng subangan kan Mecca.