| Official Name: | Longwood, Missouri |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Missouri |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Pettis |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 244 |
| Coordinates: | 38.8992°N -93.1699°W |
| Postal Code Type: | ZIP code |
| Area Code: | 660 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 729770 |
Longwood (also Hermantown or Oak Grove) is an unincorporated community in northeast Pettis County, Missouri, United States. It is located on Missouri Route BB approximately two miles east of US Route 65 and thirteen miles north of Sedalia.[1]
A post office called Longwood was established in 1837, and remained in operation until 1957.[2] The community was named after Longwood, Saint Helena, the location of Napoleon's second exile from 1815 until his death in 1821.[3]