Kennett is a city in and the county seat of Dunklin County, Missouri, United States. The city is located in the southeast corner of Missouri, 4 miles (6.4 km) east of Arkansas and 20 miles (32 km) from the Mississippi River. It had a population of 10,515 at the 2020 census. Kennett is the largest city in the Bootheel, a mostly agricultural area.