Northern Arm is located in the central region of the Canadian province of Newfoundland and Labrador. More specifically, the town lies 18 kilometers north of the Trans Canada Highway, along Route 350/352.

Route 350 can be found 11 kilometers east of Grand Falls-Windsor, and 72 kilometers west of Gander. As you drive along Route 350, you will pass the neighbouring communities of Peterview and Botwood, and will enter Northern Arm as you cross Northern Arm Brook.