The Cesar River () is a river in northern Colombia which is a part of the Magdalena Basin. It flows through the Cesar-Ranchería Basin and separates the Sierra Nevada de Santa Marta from the mountain ranges of the Serranía del Perijá, an extension of the Cordillera Oriental.
The Cesar River is a geographical feature in Colombia, specifically in the region of northern Colombia, that flows through the Cesar-Ranchería Basin and separates the Sierra Nevada de Santa Marta mountains from the mountain ranges of the Serranía del Perijá, an extension of the Cordillera Oriental.