Watsontown River Bridge is a historic bridge in Watsontown, Northumberland County, Pennsylvania and White Deer Township, Union County, Pennsylvania. It was built in 1927, and consists of nine open spandrel arches with a total length of 1,080-foot-long (330 m). It is constructed of concrete and crosses the Susquehanna River.

It was listed on the National Register of Historic Places in 1988.