尼永河（Nyong）是非洲中西部国家喀麦隆的河流，河道全长约640公里，最终注入畿内亚湾，流域面积28,000平方公里，河畔城镇有姆巴尔马约、阿科诺林加和阿邦姆邦。

The Nyong is a river in Cameroon. The river flows approximately 640 kilometres (400 mi) to empty into the Gulf of Guinea.

The Nyong (formerly German:Yong) originates 40 km (25 mi) east of Abong Mbang, where the northern rain forest feeds it. The river's length is almost parallel to the lower reaches of the Sanaga River. Its mouth is in Petit Batanga, 60 km (40 mi) south-southwest of Edéa. In two places, Mbalmayo and Déhané, the river has huge rapids. The first 300 km (200 mi) of the river, between Abong Mbang and Mbalmayo, are navigable for small boats from April to November.