| Official Name: | Calcis, Alabama |
| Pushpin Map: | Alabama#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Alabama |
| Subdivision Type2: | County |
| Subdivision Name2: | Shelby |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 535 |
| Coordinates: | 33.4264°N -86.4317°W |
| Area Code: | 205, 659 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 115387 |
Calcis is an unincorporated community in Shelby County, Alabama, United States, located along Alabama State Route 25, 3miles north-northwest of Vincent.
The community's name is derived from the word calcium, in reference to the limestone that was mined in the local quarries.[1] Calcis is located on the former Central of Georgia Railway and was once home to a passenger depot.[2] The community attempted to have a second courthouse and county jail for Shelby County placed in Calcis and went as far as presenting the argument to the Supreme Court of Alabama.[3]
The Tennessee Coal, Iron and Railroad Company operated a limestone quarry in Calcis. This limestone was shipped to Birmingham to be used as flux in iron-making.[4] The limestone mined in Calcis was a type known as Trenton limestone.[5] The Calcis Lime Works manufactured quicklime in Calcis.[6] Convict labor was used in the Calcis quarries.[7]
A post office was established in 1899, and was in operation until 1967.[8]