| Aaron Alward | |
| Order: | 25th |
| Office: | Mayor of Saint John, New Brunswick |
| Term Start: | 1866 |
| Term End: | 1870 |
| Predecessor: | Isaac Woodward |
| Successor: | Thomas M. Reed |
| Birth Date: | 21 May 1828 |
| Birth Place: | Salisbury, New Brunswick |
| Death Place: | Saint John, New Brunswick |
Aaron Alward (May 21, 1828 – April 13, 1886) was a physician and political figure in New Brunswick, Canada. He represented the City of Saint John in the Legislative Assembly of New Brunswick from 1870 to 1874.
He was born in Salisbury, New Brunswick, a descendant of United Empire Loyalists, and educated in Saint Stephen. He graduated in medicine at New York City and set up practice in Saint John. In 1860, Alward married Hattie Newel Smith. He served on the Saint John City Council and was mayor from 1866 to 1870. He was an unsuccessful candidate for a seat in the provincial assembly in 1882. He died in Saint John four years later.