| 3rd Maryland Infantry Regiment, Potomac Home Brigade | |
|---|---|
| Active | October 31, 1861, to May 29, 1865 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | Battle of Harper's Ferry Battle of Monocacy |
The 3rd Maryland Infantry Regiment, Potomac Home Brigade was an infantry regiment that served in the Union Army during the American Civil War.