| Official Name: | Twin Lakes Township, Calhoun County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Calhoun |
| Area Total Km2: | 95.36 |
| Area Land Km2: | 93.42 |
| Area Water Km2: | 1.94 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.82 |
| Area Land Sq Mi: | 36.07 |
| Area Water Sq Mi: | 0.75 |
| Population As Of: | 2000 |
| Population Total: | 1434 |
| Population Density Km2: | 15.4 |
| Population Density Sq Mi: | 39.8 |
| Elevation Footnotes: | [1] |
| Elevation M: | 373 |
| Elevation Ft: | 1224 |
| Coordinates: | 42.4344°N -94.6925°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-94152[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0468802 |
Twin Lakes Township is one of sixteen townships in Calhoun County, Iowa, United States. As of the 2000 census, its population was 1,434.
Twin Lakes Township was created in 1877. It takes its name from two lakes near the northeastern corner.[3]
Twin Lakes Township covers an area of 36.82sqmi and contains one incorporated settlement, Rockwell City. Part of the census-designated place of Twin Lakes occupies the northeast portion of the township, surrounding South Twin Lake. According to the USGS, the township contains one cemetery, Twin Lakes.