| Official Name: | Wilby, Missouri |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Missouri#USA |
| Pushpin Label: | Wilby |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Butler |
| Unit Pref: | Imperial |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 361 |
| Coordinates: | 36.8708°N -90.4397°W |
| Area Code: | 573 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 752883 |
Wilby is an unincorporated community in northern Butler County, in the U.S. state of Missouri. The community is on Missouri Route O approximately seven miles north of Poplar Bluff. It sits on the east margin of the Black River floodplain[1] at an elevation of 361 feet. The community of Hilliard lies three miles to the south-southeast along the Black River.[2] The Missouri Pacific Railway passes the west side of the community along the Black River floodplain. The community lies within the Mark Twain National Forest. Powers Creek flows north of the community. [1]
The community was most likely named after Wilby, a railroad employee.[3]