| Honorific-Prefix: | Hon. |
| Hiram Brown | |
| Order: | 1st |
| Office: | Mayor of Manchester, New Hampshire |
| Term Start: | September 8, 1846 |
| Term End: | May 25, 1847 |
| Majority: | 255 |
| Predecessor: | Board of Selectmen |
| Successor: | Jacob F. James |
| Office2: | Member of the Manchester Board of Selectmen |
| Term Start2: | 1840 |
| Term End2: | 1840 |
| Birth Date: | January 23, 1801 |
| Death Date: | September 7, 1890 (aged 89) |
| Children: | Mary Brown |
Hiram Brown (January 23, 1801 – September 7, 1890) was an American politician who served as the first mayor of Manchester, New Hampshire.
Before he was mayor, Brown worked for the Amoskeag Manufacturing Company supervising the stonework used in the construction of the company's facilities. Brown was elected in 1840 to the Manchester Board of Selectmen.
In the first city election of Manchester, New Hampshire, Brown was the Whig party candidate for mayor. In the election held on August 19, 1846, no candidate received a majority of the votes. Brown was elected mayor in the second round of the election held on September 1, 1846. Brown was sworn in as mayor at 10 A.M. on September 8, 1846, and served as mayor until his successor was sworn in on May 25, 1847.
Brown died on September 7, 1890.