| Official Name: | Linn Township, Cedar County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Cedar |
| Area Total Km2: | 50.7 |
| Area Land Km2: | 50.63 |
| Area Water Km2: | 0.07 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 19.58 |
| Area Land Sq Mi: | 19.55 |
| Area Water Sq Mi: | 0.03 |
| Population As Of: | 2000 |
| Population Total: | 201 |
| Population Density Km2: | 4 |
| Population Density Sq Mi: | 10.3 |
| Elevation Footnotes: | [1] |
| Elevation M: | 236 |
| Elevation Ft: | 774 |
| Coordinates: | 41.8364°N -91.2961°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-92643[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0468280 |
Linn Township is one of the seventeen townships in Cedar County, Iowa, United States. As of the 2000 census, its population was 201.
Linn Township was organized in 1841.[3]
Linn Township covers an area of 19.58sqmi and contains no incorporated settlements. According to the USGS, it contains two cemeteries: Achey and Mason.