Irénée-Marie Ecological Reserve (French: Réserve écologique Irénée-Marie) is an ecological reserve in the unorganized territory of Rivière-de-la-Savane, in Mékinac Regional County Municipality, in Quebec, Canada.

The reserve is located approximately 50 kilometres (31 mi) west of Saint-Joseph-de-Mékinac, in the Matawin River drainage basin, and surrounded by the ZEC Chapeau de Paille.

It has an area of 189.36 hectares (467.92 acres) and is located north-east of Arcand lake and on either side of the des Aigles river.

[3] In 1978, private clubs for hunting and fishing were abolished and replaced by zones d'exploitation contrôlée (harvested controlled zones) with the objective to democratise their activities.

The Irenée-Marie ecological reserve was created on October 31, 1985 by a decree of the Quebec Government.