| Official Name: | Buena Vista Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Clayton |
| Area Total Km2: | 51.48 |
| Area Land Km2: | 46.18 |
| Area Water Km2: | 5.3 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 19.88 |
| Area Land Sq Mi: | 17.83 |
| Area Water Sq Mi: | 2.05 |
| Area Water Percent: | 10.3 |
| Population As Of: | 2000 |
| Population Total: | 339 |
| Population Density Km2: | 7.3 |
| Population Density Sq Mi: | 19 |
| Elevation M: | 207 |
| Elevation Ft: | 679 |
| Coordinates: | 42.6742°N -90.9664°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 0467499 |
Buena Vista Township is a township in Clayton County, Iowa, United States. As of the 2000 census, its population was 339.
Buena Vista Township is named from the Battle of Buena Vista in the Mexican–American War.[1]
Buena Vista Township covers an area of 19.88sqmi and contains one incorporated settlement, North Buena Vista. According to the USGS, it contains three cemeteries: Buena Vista, Immaculate Conception and North Buena Vista.
Dead Lake, Spring Lake and Wachendorf Lake are within this township. The streams of Picayune Chute and Turkey River run through this township.