| Muir site 15 JS 86 | |
| Map Type: | USA Kentucky |
| Coordinates: | 37.8841°N -84.593°W |
| Location: | Nicholasville, Kentucky, Jessamine County, Kentucky,  United States |
| Region: | Jessamine County, Kentucky |
| Built: | 1010 CE |
| Abandoned: | 1255 |
| Cultures: | Early Fort Ancient culture |
| Precolumbian: | yes |
The Muir site, (15JS86), is an Early Fort Ancient culture archaeological site located in Jessamine County, Kentucky, in the Bluegrass region of the state. It was occupied from about 1010 to 1255 CE during the Osborne Phase of the local chronology. The site is near Jessamine Creek, on top of a broad ridge. Unlike later Fort Ancient villages, which are more compact, the Muir site structures were spread out over the ridge top.[1] These structures were rectangular with single set post construction, as opposed to Mississippian style wall trench construction. Within the houses were 30cm (10inches) to 50cm (20inches) deep floor basins with centrally located hearths for cooking and heating. Pottery found at the Muir site was limestone-tempered,[1] unlike some later Fort Ancient pottery which became mussel shell tempered after contact with Mississippian cultures.