圭亚那城是委内瑞拉的城市，由玻利瓦尔州负责管辖，位于该国东北部奥里诺科河南岸，始建于1961年，面积3,200平方公里，海拔高度13米，2001年人口940,477。

Ciudad Guayana (Spanish pronunciation: [sjuˈðað ɣwaˈʝana]) is a city in Bolívar State, Venezuela. It lies south of the Orinoco, where the river is joined by the Caroní River. The city, officially founded in 1961, is actually composed of the old town of San Félix at the east and the new town of Puerto Ordaz at the west, which lie on either banks of the Caroní and are connected by three bridges. The city stretches 40 kilometers along the south bank of the Orinoco. With approximately one million people, it is Venezuela's fastest-growing city, due to its important iron industry.