Route 315, also known as Wood Islands Road, is a 23.1-kilometre (14.4 mi), two-lane, uncontrolled-access, local highway in Prince Edward Island.

Its southern terminus is at Route 1 in Wood Islands, and its northern terminus is at Route 4 in Montague.

It generally forms a straight line between the termini.

The route is in Queens and Kings counties.

This Prince Edward Island road, road transport or highway-related article is a stub.