The Stuart River is one of the largest tributaries of the Nechako River in northeastern British Columbia, Canada. The Nechako is in turn one the more important tributaries of the Fraser River. The Stuart River flows from Stuart Lake to its junction with the Nechako River. The river drains a portion of the Nechako Plateau—a gently-rolling region characterized by small lakes and tributaries. Low but impressive ridges interact with the river, creating high bluffs and hoodoos.