| Official Name: | Millville Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Clayton |
| Area Total Km2: | 91.32 |
| Area Land Km2: | 88.67 |
| Area Water Km2: | 2.64 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.26 |
| Area Land Sq Mi: | 34.24 |
| Area Water Sq Mi: | 1.02 |
| Area Water Percent: | 2.89 |
| Population As Of: | 2000 |
| Population Total: | 471 |
| Population Density Km2: | 5.3 |
| Population Density Sq Mi: | 13.8 |
| Elevation M: | 198 |
| Elevation Ft: | 650 |
| Coordinates: | 42.6917°N -91.0742°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468384 |
Millville Township is a township in Clayton County, Iowa, United States. As of the 2000 census, its population was 471.
Millville Township is named from the mill constructed there about 1833.[1]
Millville Township covers an area of 35.26sqmi and contains one incorporated settlement, Millville. Neighboring townships include Mallory Township, Jefferson Township, and Buena Vista Township.[2] According to the USGS, it contains six cemeteries: Bierer, Friedlein, Goshen, Graham, Griffith and Redman.
The stream of Little Turkey River runs through this township.