The Bras d'Apic (in English: Apic Arm) is a river which flows in the municipalities of Saint-Marcel and Saint-Cyrille-de-Lessard, in the L'Islet Regional County Municipality, in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.

The "Bras d'Apic" is a tributary of the east bank of Bras Saint-Nicolas which flows to the south-east bank of the rivière du Sud (Montmagny); the latter flows north-east to the south shore of the St. Lawrence River.

The main watersheds neighboring Bras d'Apic are: The arm of Apic has its source at Lake Apic (length: 1.0 kilometre (0.62 mi); altitude: 406 metres (1,332 ft)), located in a mountainous area, in the canton of Arago of Saint-Marcel.

This confluence is located downstream of the Pierre-Noël road bridge, i.e. 3.4 kilometres (2.1 mi) west of the center of the village of Saint-Cyrille-de-Lessard.

[1] The toponym "Bras d'Apic" was made official on December 2, 1975, at the Commission de toponymie du Québec.