Tennessee's 1st congressional district

Tennessee's 1st congressional district is the congressional district for northeast Tennessee, including all of Carter, Cocke, Greene, Hamblen, Hancock, Hawkins, Johnson, Sullivan, Unicoi, Washington, and Sevier counties, as well as parts of Jefferson County. It is largely coextensive with the Tennessee portion of the Tri-Cities region of northeast Tennessee and southwest Virginia. With a Cook Partisan Voting Index rating of R+29, it is the most Republican district in Tennessee and the third most Republican in the country.

Cities and towns represented within the district include Blountville, Bristol, Church Hill, Elizabethton, Erwin, Gatlinburg, Greeneville, Johnson City, Jonesborough, Kingsport, Morristown, Mountain City, Newport, Pigeon Forge, Roan Mountain, Rogersville, Sneedville, Sevierville, and Tusculum. The 1st district's seat in the U.S. House of Representatives has been held by Republicans since 1881.

The district was created in 1805 when the at-large seat was divided into multiple districts.

The district's current representative is Republican Diana Harshbarger, who was first elected in 2020 following the retirement of Republican Phil Roe.