Cobbs Creek is an 11.8-mile-long (19.0 km) tributary located in the United States. It flows through Delaware County, Pennsylvania, and serves as a geographical boundary between several municipalities.
The creek forms an approximate border between Montgomery County and Delaware County. After passing underneath Township Line Road, it establishes the border between Philadelphia County and Delaware County. Notably, the waterway runs directly through both sides of Mount Moriah Cemetery, which spans the border of Southwest Philadelphia and Yeadon. Cobbs Creek eventually joins Darby Creek before flowing into the Delaware River.