The 15th New Brunswick Legislative Assembly represented New Brunswick between February 6, 1851, and May 19, 1854.
The assembly sat at the pleasure of the Governor of New Brunswick Edmund Walker Head.
Charles Simonds was chosen as speaker for the house. After Simonds resigned his seat, William Crane served as speaker from January 1852 to March 1853 when he resigned due to poor health. Daniel Hanington was chosen to replace Crane as speaker.
| Electoral District | Name |
|---|---|
| Saint John County | Robert D. Wilmot |
| William J. Ritchie[1] John F. Goddard (1851) | |
| John H. Gray | |
| Charles Simonds John Johnson (1851) | |
| York | James Taylor |
| George L. Hatheway | |
| Thomas Pickard, Jr. | |
| Lemuel A. Wilmot | |
| Westmorland | William Crane[2] Amand Landry (1853) |
| Daniel Hanington | |
| Bliss Botsford | |
| Robert B. Chapman | |
| Kings | Matthew McLeod |
| George Ryan | |
| Henry W. Purdy | |
| Queens | John Earle |
| Thomas Gilbert | |
| Charlotte | John James Robinson |
| Robert Thomson | |
| William Porter | |
| Bartholomew R. Fitzgerald | |
| Northumberland | Alexander Rankin[3] Peter Mitchell (1852) |
| John A. Street | |
| John M. Johnson | |
| John T. Williston | |
| Sunbury | George Hayward |
| William Scoullar | |
| Kent | Robert B. Cutler |
| Francis McPhelim | |
| Gloucester | Robert Gordon |
| Joseph Read | |
| Carleton | Charles Connell |
| Horace H. Beardsley | |
| Restigouche | John Montgomery |
| Andrew Barberie | |
| Albert | William H. Steeves |
| Reuben Stiles | |
| Victoria | John R. Partelow |
| Francis Rice | |
| Saint John City | Samuel Leonard Tilley James A. Harding (1851) |
| William H. Needham |