12th Mississippi Legislature
The 12th Mississippi Legislature met in Jackson from January 5, 1829 to February 6, 1829.
Senate
As the incumbent lieutenant governor, A. M. Scott served as the ex officio President of the Senate. Non-senators David Gordon and Joseph Pearce were elected Clerk and Door-Keeper respectively.| County District | Senator Name |
| Adams | Fountain Winston |
| Wilkinson | Joseph Johnson |
| Pike, Marion | Wiley P. Harris |
| Jackson, Hancock, Green, Perry | John McLeod |
| Amite, Franklin | Willie Jackson |
| Monroe | James F. Trotter |
| Claiborne | Thomas Freeland |
| Copiah, Jefferson | John L. Irwin |
| Wayne, Covington, Jones | Hamilton Cooper |
| Lawrence, Simpson | Joseph Cooper |
| Hinds, Rankin, Madison, Yazoo, Washington, Warren | Henry W. Vick |