Collin River is a tributary of the North Shore of the Mégiscane River, flowing into Senneterre, in La Vallée-de-l'Or Regional County Municipality, in the administrative region of Abitibi-Témiscamingue, Quebec, Canada.

The course of the river crosses successively the townships of Boisseau and Jurie.

The Collin River flows entirely in forest territory, generally towards the South crossing five bodies of water.

The mouth of this head lake is located at 3.6 kilometres (2.2 mi) south-east of R0807 which runs northward to the west of Martin Lake; at 18.1 kilometres (11.2 mi) north of the confluence of the Collin River with the Mégiscane River; at 35.0 kilometres (21.7 mi) east of downtown Senneterre; and at 37.4 kilometres (23.2 mi) south-east of the mouth of Parent Lake (Abitibi).

The latter lake in turn flows into the Nottaway River, a tributary of the southeastern shore of James Bay.