The zec Casault is a "zone d'exploitation contrôlée" (controlled harvesting zone) (ZEC), in La Matapedia Regional County Municipality and d'Avignon Regional County Municipality, Quebec, Canada.

The name of the ZEC comes from the Cassault Township Casault, which itself was named in honor of Louis-Napoléon Casault who was a member of Montmagny in the legislature of the Province of Canada from 1854 to 1857 and MP in Bellechasse to the House of Commons of Canada from 1867 to 1870.

Its territory is included in the municipality of Saint-Alexandre-des-Lacs and non-organized Lac-Casault of Rivière-Nouvelle by Ruisseau-des-Mineurs and Routhierville.

ZEC Casault authorizes hunting small animal such as the Hare, the ruffed grouse and coyote.

[3] In terms of big animal, Zec houses the moose, deer and black bear.