The 9th New Brunswick Legislative Assembly represented New Brunswick between February 14, 1828, and 1830.
The assembly sat at the pleasure of the Governor of New Brunswick Howard Douglas.
Richard Simonds was chosen as speaker for the house. He was replaced by his brother Charles in 1829.
| Electoral District | Name | First elected / previously elected |
|---|---|---|
| Charlotte | Colin Campbell | 1809, 1827 |
| Thomas Wyer | 1827 | |
| Joseph N. Clarke [a] | 1820 | |
| Hugh Mackay | 1816 | |
| Patrick Clinch (1828) [a] | 1828 | |
| Joseph N. Clarke (1829) | 1820, 1829 | |
| Gloucester | Hugh Munro | 1827 |
| Kent | John W. Weldon | 1827 |
| Kings | Samuel Freeze | 1819, 1827 |
| John Humbert | 1827 | |
| Northumberland | Richard Simonds | 1816 |
| Alexander Rankin | 1827 | |
| Joseph Cunard (1828) | 1828 | |
| Queens | Harry Peters | 1827 |
| Charles Harrison | 1827 | |
| Thomas Gilbert (1828) | 1828 | |
| Saint John City | Hugh Johnston, Jr. | 1820 |
| Gregory Van Horne | 1827 | |
| Saint John County | John R. Partelow | 1827 |
| Charles Simonds | 1820 | |
| John Ward, Jr. | 1827 | |
| Robert Parker | 1826 | |
| Sunbury | Thomas O. Miles | 1827 |
| George Hayward | 1827 | |
| Westmorland | Edward B. Chandler | 1827 |
| Philip Palmer | 1827 | |
| William Crane | 1824 | |
| Robert Scott | 1827 | |
| York | William Taylor | 1822 |
| John Allen | 1809 | |
| John Dow | 1816 | |
| Richard Ketchum | 1827 |