Riverside is a neighborhood of Jacksonville, Florida; it is located south of downtown Jacksonville on the St. Johns River. It comprises an area roughly bordered by U.S. Route 17 (Roosevelt Boulevard) and the CSX Railroad (formerly Atlantic Coast Line Railroad) to the west, Interstate 10 to the north, and the St. Johns River to the east. To the south is the adjacent neighborhood of Avondale, though the boundary between them is not clear cut.
Riverside contains the Five Points area, a historic commercial district. The Riverside Historic District was added to the National Register