Pennsylvania Route 274 (PA 274) is a state highway located in Franklin and Perry Counties in Pennsylvania. The western terminus is at PA 75 in the Fannett Township community of Doylesburg. The eastern terminus is at an interchange with U.S. Route 11 (US 11)/US 15 in Duncannon. PA 274 is a two-lane undivided road that runs through rural areas in the Ridge-and-Valley Appalachians. The route heads northeast and crosses Conococheague Mountain, at which point it leaves Franklin County for Perry County. PA 274 continues through agricultural valleys and intersects PA 17 in Blain, PA 850 in Loysville and PA 233 and PA 74 in Green Park. In New Bloomfield, PA 274 intersects PA 34 and turns southeast for a concurrency with that route to Mecks Corner. From here, the route continues east to Duncannon.