| Official Name: | River Styx, Ohio |
| Pushpin Map: | Ohio#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Medina |
| Population As Of: | 2016 |
| Population Total: | 39 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1020 |
| Coordinates: | 41.0569°N -81.7997°W |
| Area Code: | 234 & 330 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1071119 |
River Styx is an unincorporated community in Medina County, Ohio, United States. River Styx is located 4.5 miles from Wadsworth and 6.5 miles from Medina.
A post office called River Styx was established in 1828, and remained in operation until it was discontinued in 1905.[1] The community and the nearby Styx River derive their names from the Styx, a river in Greek mythology.[2] The gloomy character of a nearby swamp caused the name to be selected.[3] River Styx has been noted for its unusual place name.[4]
There is a cemetery that was established as a pioneer homestead graveyard in 1821.[5]