Kelly Township is one of fourteen townships in Cooper County, Missouri, USA. As of the 2000 census, its population was 676.
Kelly Township was named after John Kelley, a pioneer citizen.
According to the United States Census Bureau, Kelly Township covers an area of 66.69 square miles (172.74 square kilometers); of this, 66.61 square miles (172.53 square kilometers, 99.88 percent) is land and 0.08 square miles (0.21 square kilometers, 0.12 percent) is water.
(These towns are listed as "historical" by the USGS.)
The township contains these five cemeteries: Chilton, Hopewell, Howard, Masonic and Woods.