Lower Montana River

 is a river in Red Dead Redemption and Red Dead Redemption 2. The river acts as the border between the New Austin and West Elizabeth territories.

Background
The river begins with the Aurora Basin in the Tall Trees region of the West Elizabeth territory. It then flows southward between West Elizabeth and New Austin, north of MacFarlane's Ranch. The river flows into Flat Iron Lake between Thieves Landing and Quaker's Cove.