| 3rd Regiment, Massachusetts Volunteer Heavy Artillery | |
|---|---|
| Active | Jan 1863 to 26 Sept 1865[1] |
| Country |  United States |
| Allegiance | Union |
| Branch | United States Army |
| Type | Heavy artillery |
| Size | 1897 |
| Commanders | |
| Notable commanders | Col. William S. Abert |
The 3rd Massachusetts Volunteer Heavy Artillery Regiment was a unit that served in the Union Army during the American Civil War. It was organized from already mustered unattached companies of heavy artillery raised for the defenses of the Massachusetts coast.
- ^ As a regiment, it wasn't organized until the fall of 1864, but the first of the unattached companies it would later include was mustered on 10 Jan 1863