| Official Name: | Mallory Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Clayton |
| Area Total Km2: | 93.19 |
| Area Land Km2: | 93.18 |
| Area Water Km2: | 0.01 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.98 |
| Area Land Sq Mi: | 35.98 |
| Area Water Sq Mi: | 0 |
| Area Water Percent: | 0.01 |
| Population As Of: | 2010 |
| Population Total: | 391 |
| Population Density Km2: | 4.2 |
| Population Density Sq Mi: | 10.9 |
| Elevation M: | 360 |
| Elevation Ft: | 1181 |
| Coordinates: | 42.6919°N -91.1906°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0468336 |
Mallory Township is a township in Clayton County, Iowa, United States. At the 2010 census, its population was 395, down from 411 ten years earlier.
Mallory Township covers an area of 35.98sqmi and contains one incorporated settlement, Osterdock. According to the USGS, it contains seven cemeteries: Bethel, Bolsinger, Brown, Hansel, King, Koenig and Noggle.
The streams of Joles Creek, Mill Creek and Peck Creek run through this township.