Maryland elected its members October 2, 1820.
| District | Incumbent | This race | ||||||
|---|---|---|---|---|---|---|---|---|
| Member | Party | First elected | Results | Candidates | ||||
| Raphael Neale | Federalist | 1818 | Incumbent re-elected. | nowrap | √ Raphael Neale (Federalist) 54.0% Nicholas Stonestreet (Federalist) 46.0% | |||
| Joseph Kent | Democratic-Republican | 1810 1814 (Lost) 1818 | Incumbent re-elected. | nowrap | √ Joseph Kent (Democratic-Republican) 96.9% John C. Herbert (Federalist) 2.2% | |||
| Henry R. Warfield | Federalist | 1818 | Incumbent re-elected. | nowrap | √ Henry R. Warfield (Federalist) 99.3% | |||
| Samuel Ringgold | Democratic-Republican | 1810 1814 (Lost) 1816 | Incumbent retired. New member elected. Democratic-Republican hold. | nowrap | √ John Nelson (Democratic-Republican) 57.9% Thomas C. Worthington (Federalist) 41.9% | |||
| Samuel Smith | Democratic-Republican | 1792 1803 (Retired) 1816 | Incumbent re-elected. | √ Peter Little (Democratic-Republican) 50.0% √ Samuel Smith (Democratic-Republican) 50.0% | ||||
| Peter Little | Democratic-Republican | 1810 1812 (Lost) 1816 | Incumbent re-elected. | |||||
| Stevenson Archer | Democratic-Republican | 1811 (Special) 1816 (Lost) 1818 | Incumbent retired. New member elected by lot after tied vote. Democratic-Republican hold. | nowrap | √ Jeremiah Cosden (Democratic-Republican) 49.9% Philip Reed (Democratic-Republican) 49.9% | |||
| Thomas Culbreth | Democratic-Republican | 1816 | Incumbent lost re-election. New member elected. Democratic-Republican hold. | nowrap | √ Robert Wright (Democratic-Republican) 50.5% Thomas Culbreth (Democratic-Republican) 49.5% | |||
| Thomas Bayly | Federalist | 1816 | Incumbent re-elected. | nowrap | √ Thomas Bayly (Federalist) 99.5% | |||