| Official Name: | Bath, South Dakota |
| Settlement Type: | Census-designated place |
| Pushpin Map: | South Dakota#USA |
| Pushpin Label: | Bath |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Brown |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.75 |
| Area Land Km2: | 0.75 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.29 |
| Area Land Sq Mi: | 0.29 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 142 |
| Population Density Km2: | 188.37 |
| Population Density Sq Mi: | 487.97 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1303 |
| Coordinates: | 45.4692°N -98.3236°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 57427 |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-03900 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2584544 |
Bath is an unincorporated community and census-designated place in Brown County, South Dakota, United States. As of the 2020 census, Bath had a population of 142.[3]
A post office called Bath was established in 1881.[4] The community's name is derived from Bath, England.[5]