| Official Name: | Lim Rock, Alabama |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Alabama#USA |
| Pushpin Label: | Lim Rock |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name: | United States |
| Subdivision Name1: | Alabama |
| Subdivision Name2: | Jackson |
| Elevation Ft: | 620 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Coordinates: | 34.6722°N -86.1883°W |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP code |
| Area Code: | 256 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 154471 |
Lim Rock, also known as Limrock, Lime Rock, Boyds Switch, or Boyd Switch, is an unincorporated community in southern Jackson County, Alabama, United States. It is located on Alabama State Route 35 halfway between Scottsboro and Woodville.
The community was originally named Boyd Switch in honor of local merchant John Boyd and was a stop on the Southern Railway. The name was then changed to Lim Rock after a local citizen made a contribution to the Methodist church with the stipulation that the community name be changed.[1] A post office operated under the name Boyd Switch from 1870 to 1882 and under the name Lim Rock from 1882 to 1956.[2]