| Official Name: | Garden Grove Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Decatur |
| Area Total Km2: | 92.55 |
| Area Land Km2: | 92.43 |
| Area Water Km2: | 0.11 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.73 |
| Area Land Sq Mi: | 35.69 |
| Area Water Sq Mi: | 0.04 |
| Area Water Percent: | 0.12 |
| Population As Of: | 2000 |
| Population Total: | 428 |
| Population Density Km2: | 4.6 |
| Population Density Sq Mi: | 12 |
| Elevation M: | 326 |
| Elevation Ft: | 1070 |
| Coordinates: | 40.8581°N -93.6156°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0467889 |
Garden Grove Township is a township in Decatur County, Iowa, United States. As of the 2000 census, its population was 428.
Garden Grove Township was created in 1850.[1]
Garden Grove Township covers an area of ; of this, or 0.12 percent is water. The streams of Mormon Pool and Weldon Creek run through this township.
The township contains five cemeteries: Doze, Garden Grove, Metier, Morman and Winters.