The Little River of the Chef (French: Petite rivière du Chef) is a tributary of the La Loche River (Ashuapmushuan River), flowing into the unorganized territory of Lac-Ashuapmushuan, Quebec, into the Regional County Municipality (RCM) of Le Domaine-du-Roy, in the administrative region of Saguenay-Lac-Saint-Jean, in Quebec, in Canada.

The forest road R0203 (North-South direction) serves the lower part of the valley of the "Little River of the Chef"; this road starts at the junction of route 167 which links Chibougamau to Saint-Félicien, Quebec.

The "Little River of the Chef" is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

The "Little River of the Chef" originates at the mouth of Aigremont Lake (length: 7.7 kilometres (4.8 mi), altitude: 397 metres (1,302 ft)) located in the township of Le Ber.

The mouth of this head lake is located at: From the mouth of Aigremont Lake, the course of the "Little River of the Chef" flows over 13.7 kilometres (8.5 mi) according to the following segments: The confluence of the "Petite rivière du Chef" with the Normandin River is located at: The toponym "Petite rivière du Chef" was officialized on December 5, 1968, at the Commission de toponymie du Québec, when it was created.