| Official Name: | Lake Mystic, Florida |
| Pushpin Map: | Florida#USA |
| Pushpin Label: | Lake Mystic |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Florida |
| Subdivision Type2: | County |
| Subdivision Name2: | Liberty |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 4.708 |
| Area Land Sq Mi: | 4.538 |
| Area Water Sq Mi: | 0.170 |
| Population As Of: | 2010 |
| Population Total: | 500 |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 138 |
| Coordinates: | 30.3906°N -84.9858°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 32321[2] |
| Area Code: | 850 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 2628523 |
Lake Mystic is an unincorporated community and census-designated place in Liberty County, Florida, United States. Its population was 500 at the 2010 census.[1]
According to the U.S. Census Bureau, the community has an area of ; of its area is land, and is water.[1]