| 1st Maryland Infantry Regiment, Potomac Home Brigade | |
|---|---|
| Active | August 15, 1861, to December 1864 |
| Country |  United States |
| Allegiance | Union |
| Branch | United States Army Union Army |
| Type | Infantry |
| Engagements | Battle of Harper's Ferry Battle of Gettysburg Battle of New Market (detachment) Battle of Monocacy (5 companies) |
| Commanders | |
| Colonel | William P. Maulsby |
The 1st Maryland Infantry Regiment, Potomac Home Brigade was an infantry regiment that served in the Union Army during the American Civil War.