Kentucky elected its members August 7, 1820.
| District | Incumbent | This race | ||||||
|---|---|---|---|---|---|---|---|---|
| Member | Party | First elected | Results | Candidates | ||||
| David Trimble | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | √ David Trimble (Democratic-Republican) 68.5% William P. Fleming 31.5% | |||
| Henry Clay | Democratic-Republican | 1810 1814 (Resigned) 1814 1815 (Seat declared vacant) 1815 (Special) | Incumbent retired. New member elected. Democratic-Republican hold. | nowrap | √ Samuel H. Woodson (Democratic-Republican) 59.4% John Pope (Democratic-Republican) 37.8% Thomas T. Barr 2.8% | |||
| William Brown | Democratic-Republican | 1818 | Incumbent retired. New member elected. Democratic-Republican hold. | nowrap | √ John T. Johnson (Democratic-Republican) 98.6% Thomas A. Grimes 1.4% | |||
| Thomas Metcalfe | Democratic-Republican | 1818 | Incumbent re-elected. | nowrap | √ Thomas Metcalfe (Democratic-Republican) | |||
| Alney McLean | Democratic-Republican | 1814 1816 (Retired) 1818 | Incumbent retired. New member elected. Democratic-Republican hold. | nowrap | √ Anthony New (Democratic-Republican) John Daviess Dickson Gwen | |||
| David Walker | Democratic-Republican | 1816 | Incumbent died March 1, 1820. New member elected. Democratic-Republican hold. Successor also elected to finish the term. | nowrap | √ Francis Johnson (Democratic-Republican) 57.2% John Breathitt 41.8% Willis Wills 1.0% | |||
| George Robertson | Democratic-Republican | 1816 | Incumbent re-elected. Incumbent resigned sometime before the start of the new Congress, leading to an August 6, 1821 special election. | nowrap | √ George Robertson (Democratic-Republican) | |||
| Richard C. Anderson, Jr. | Democratic-Republican | 1816 | Incumbent retired. New member elected. Democratic-Republican hold. Successor died October 13, 1821, leading to a November 22, 1821 special election. | nowrap | √ Wingfield Bullock (Democratic-Republican) Norborne B. Beall Samuel Churchill John Logan | |||
| Tunstall Quarles | Democratic-Republican | 1816 | Incumbent resigned June 15, 1820. New member elected. Democratic-Republican hold. Successor also elected to finish the term. | nowrap | √ Thomas Montgomery (Democratic-Republican) | |||
| Benjamin Hardin | Democratic-Republican | 1814 1816 (Retired) 1818 | Incumbent re-elected. | nowrap | √ Benjamin Hardin (Democratic-Republican) Richard Rudd John Hays | |||