The Polly Ann Trail is a 36.7-mile long, non-motorized trail in Oakland and Lapeer Counties, Michigan on a former Pontiac, Oxford & Northern Railroad corridor. 

The portion of the trail in Oakland County has a crushed stone surface and runs for 16.9 miles from Orion Township to the Oakland–Lapeer county line. Certain sections of the trail in urban areas have an improved asphalt surface. Along the way, trail users pass through the communities of Orion Township, Oxford Township, the Village of Oxford, Addison Township and the Village of Leonard.