| Official Name: | Grimes Township, Cerro Gordo County |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Cerro Gordo |
| Area Total Km2: | 93.44 |
| Area Land Km2: | 93.44 |
| Area Water Km2: | 0 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.08 |
| Area Land Sq Mi: | 36.08 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2000 |
| Population Total: | 851 |
| Population Density Km2: | 9.1 |
| Population Density Sq Mi: | 23.6 |
| Elevation Footnotes: | [1] |
| Elevation M: | 378 |
| Elevation Ft: | 1240 |
| Coordinates: | 42.9494°N -93.4319°W |
| Blank Name: | FIPS code |
| Blank Info: | 19-91773[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0467978 |
Grimes Township is one of sixteen townships in Cerro Gordo County, Iowa, United States. As of the 2000 census, its population was 851.
Grimes Township covers an area of 36.08sqmi and contains two incorporated settlements: all of Meservey and most of Thornton (which is partly in Pleasant Valley Township to the east). According to the USGS, it contains one cemetery, Pleasant View.