| Pettyjohn, Marion County, West Virginia | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | West Virginia#USA |
| Pushpin Label: | Pettyjohn |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | West Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | Marion |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 984 |
| Coordinates: | 39.4667°N -80.1539°W |
| Postal Code Type: | ZIP codes |
| Blank Name: | GNIS ID |
| Blank Info: | 1718190 |
Pettyjohn was an unincorporated community in Marion County, West Virginia, United States. Founded by Captain David Morgan in 1776. The town had its own ferry, salt works, mail drop, trading post, and David built one of his many houses here.