The Styx is a goddess and a river in Greek mythology that formed the boundary between Earth and the Underworld.
Styx River or River Styx may also refer to:
Geography Municipalities River Styx, Ohio, a community in Medina County, Ohio
Rivers River Styx, a part of the Cataraqui River, Ontario, Canada Styx (Perm), Russia Mavroneri, the river most commonly associated with the Styx.
Australia Styx River (East Central Queensland) Styx River (New South Wales) Styx River (Tasmania) Styx River (West Central Queensland)
New Zealand Styx River (Canterbury) Styx River (North Canterbury) Styx River (West Coast) Styx Creek, in Otago
United States Styx River (Alabama) River Styx (Georgia) River Styx, a semi-subterranean stream in Mammoth Cave National Park, Kentucky River Styx (Gratiot County, Michigan) River Styx (Marquette County, Michigan) Styx River (Ohio) River Styx, the subterranean portion of Cave Creek in Oregon Caves National Monument and Preserve Styx Branch, a stream in Tennessee
Arts, entertainment, and media "River Styx", a song by Black Rebel Motorcycle Club from Beat the Devil's Tattoo River Styx, the Nile River in Robert E. Howard's fictional Hyborian Age River Styx Magazine, a magazine based in St Louis, Missouri River Styxx, a character in the Monster High franchise The River Styx (painting) or La Laguna Estigia, a painting by Felix Resurreccion Hidalgo
Other River Styx archaeological site, in Alachua County, Florida
See also Styx (disambiguation)