Soddy-Daisy is a city in Hamilton County, Tennessee, United States. The population was 13,070 at the 2020 census and estimated to be 13,619 in 2022. The city was formed in 1969 when the communities of Soddy and Daisy, along with nearby developed areas along U.S. Highway 27, merged to form Soddy-Daisy. It is becoming a bedroom community of nearby Chattanooga and is part of the Chattanooga Metropolitan Statistical Area. Sequoyah Nuclear Generating Station is located in Soddy-Daisy.

Hamilton County is a county located in the U.S. state of Tennessee. It is located in the southern part of East Tennessee on the border with Georgia. As of the 2020 census, the population was 366,207, making it the fourth-most populous county in Tennessee. Its county seat is Chattanooga, located along the Tennessee River. The county was named for Alexander Hamilton, the first secretary of the treasury.