| Longrun, Missouri | |
| Native Name Lang: | EN |
| Settlement Type: | Community |
| Pushpin Map: | Missouri#USA |
| Pushpin Map Alt: | Location of Longrun, Missouri |
| Pushpin Map Caption: | Location of Longrun, Missouri |
| Coordinates: | 36.6494°N -92.7228°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Country |
| Subdivision Name: | U. S. A. |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Ozark County |
| Established Date: | 1898 |
| Elevation M: | 263 |
| Population Density Km2: | auto |
| Timezone1: | CST |
| Utc Offset1: | -6 |
| Timezone1 Dst: | CDT |
| Utc Offset1 Dst: | -5 |
Longrun is an unincorporated community in western Ozark County, Missouri, United States. It is located on Route 95, approximately northwest of Theodosia and southwest of Thornfield.[2] Longrun's post office closed and mail delivery is now served by Theodosia.
Longrun was established in 1898 with a post office and school in Longrun Township near Longrun Creek.[3] The post office was discontinued in 1980.[4]