Daisy is a small unincorporated community in Atoka County, Oklahoma, United States, along State Highway 43. Located in the northeastern part of the county, Daisy was once a thriving community with a general store, school and other institutions. The post office was opened April 5, 1906. It is said to have been named for Daisy Beck, a local girl. The most famous person from Daisy is Clarence Carnes, who at 18 was the youngest inmate ever sent to Alcatraz. He is buried on the Indian land not far from Daisy.