The East Branch Lackawanna River is a tributary of the Lackawanna River in Wayne County and Susquehanna County, in Pennsylvania, in the United States. It is approximately long and flows through Preston Township in Wayne County and Ararat Township, Herrick Township, Union Dale, and Clifford Township. The watershed of the river has an area of . The river is not designated as impaired and has a relatively high level of water quality. A portion of the Moosic Mountains (specifically Ararat Mountain and Sugar Loaf Mountain) are in its vicinity. Source ponds in the river's watershed include Bone Pond, Dunns Pond, Independent Lake, Lake Lorain, Mud Pond, and Orson Pond. There are a number of wetlands and swamps in the watershed, but agricultural and forested land is present as well.