Green Pond Marsh is the name of a wetlands area located in Bethlehem Township, Pennsylvania. The marsh is located approximately one-quarter mile (0.4 km) south of U.S. Route 22 (the Lehigh Valley Thruway) and east of Farmersville Road. It is bisected by Green Pond Road. The marsh is separated from Green Pond (a permanent body of water approximately 5.1 acres [2.06 hectares] in area) by Farmersville Road.