| Flavius, Kansas | |
| Settlement Type: | Ghost town |
| Image Map1: | Map of Rush Co, Ks, USA.png |
| Map Caption1: | KDOT map of Rush County (legend) |
| Pushpin Map: | Kansas#USA |
| Pushpin Label: | Flavius |
| Pushpin Label Position: | left |
| Coordinates: | 38.4139°N -99.4928°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kansas |
| Subdivision Type2: | County |
| Subdivision Name2: | Rush |
| Subdivision Type3: | Township |
| Established Title: | Founded |
| Established Title1: | Platted |
| Unit Pref: | Imperial |
| Elevation Ft: | 2136 |
| Population Total: | 0 |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP code |
| Area Code Type: | Area code |
| Area Code: | 785 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS ID |
| Blank1 Info: | 482548[1] |
Flavius is a ghost town in Belle Prairie Township, Rush County, Kansas, United States.
Flavius was issued a post office in 1880. The post office was discontinued in 1895.[2]