| Official Name: | Bath Township, Cerro Gordo County |
| Settlement Type: | Township |
| Mapsize1: | bath township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Cerro Gordo |
| Area Total Km2: | 94.8 |
| Area Land Km2: | 94.8 |
| Area Water Km2: | 0 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.6 |
| Area Land Sq Mi: | 36.6 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2000 |
| Population Total: | 337 |
| Population Density Km2: | 3.6 |
| Population Density Sq Mi: | 9.2 |
| Elevation Footnotes: | [1] |
| Elevation M: | 354 |
| Elevation Ft: | 1161 |
| Coordinates: | 43.0392°N -93.2036°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-90135[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0467417 |
Bath Township is one of sixteen townships in Cerro Gordo County, Iowa, United States. As of the 2000 census, its population was 337.
Bath Township covers an area of 36.6sqmi, and contains no incorporated settlements. The city of Rockwell (population about 1000) borders it to the south. The southern part of the township to its north likewise remains unincorporated, while its northern portion includes most of Mason City, with a population of about 30,000. (Mason City was the childhood home of Meredith Willson, who is said to have modeled after it "River City, Iowa", the setting for his musical The Music Man.)