The Greenline was a proposed $138 million mass transit line for the Upper Schuylkill Valley region in southeastern Pennsylvania in the United States.

[1] Citizens for the Train spearheaded the Greenline's planning stages, and concluded a preliminary study (performed by engineering firm Gannett Fleming Inc.) to determine the feasibility of the project.

[2] Due to the ill-fated $2 billion Schuylkill Valley Metro (SVM) project, the Greenline proposal received support from regional politicians and businesses.

Freight service continued through 2004, when the last customer American Sweetener Corporation, whose plant was located at the end of the line in Devault, closed its doors.

Paoli Station also hosts Amtrak's Keystone Service and Pennsylvanian, serving trains en route to Harrisburg, Pittsburgh and New York City.