| Official Name: | Logan Township, Calhoun County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Calhoun |
| Area Total Km2: | 93.6 |
| Area Land Km2: | 93.59 |
| Area Water Km2: | 0.01 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.14 |
| Area Land Sq Mi: | 36.14 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2000 |
| Population Total: | 142 |
| Population Density Km2: | 1.5 |
| Population Density Sq Mi: | 3.9 |
| Elevation Footnotes: | [1] |
| Elevation M: | 361 |
| Elevation Ft: | 1184 |
| Coordinates: | 42.3403°N -94.5753°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-92688[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0468295 |
Logan Township is one of sixteen townships in Calhoun County, Iowa, United States. As of the 2000 census, its population was 142.
Logan Township was created in 1879. It is named for Gen. John A. Logan.[3]
Logan Township covers an area of 36.14sqmi and contains no incorporated settlements. According to the USGS, it contains three cemeteries: Logan Township, Piper and Roby.