| Official Name: | Coon Island Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Butler |
| Area Total Km2: | 98.91 |
| Area Land Km2: | 98.87 |
| Area Water Km2: | 0.03 |
| Area Total Sq Mi: | 38.19 |
| Area Land Sq Mi: | 38.17 |
| Area Water Sq Mi: | 0.01 |
| Area Water Percent: | 0.03 |
| Population As Of: | 2010 |
| Population Total: | 187 |
| Population Density Km2: | 2.2 |
| Population Density Sq Mi: | 5.7 |
| Elevation M: | 91 |
| Coordinates: | 36.5511°N -90.3989°W |
| Blank Name: | FIPS code |
| Blank Info: | 29-16264[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0766352 |
Coon Island Township is one of ten townships in Butler County, Missouri, USA. As of the 2010 census, its population was 187.[2]
Coon Island Township covers an area of 38.19sqmi and contains no incorporated settlements. It contains one cemetery, Coon Island.
Allred Lake is within this township. The streams of Big Hunting Slough, Caney Slough and Little Hunting Slough run through this township.