| Unit Name: | 1st New Jersey Infantry Regiment |
| Dates: | May 21, 1861 to June 29, 1865 |
| Disbanded: | June 29, 1865 |
| Country: |  United States |
| Allegiance: | Union |
| Branch: | United States Army Union Army |
| Type: | Infantry |
| Command Structure: | First New Jersey Brigade, 1st Division, VI Corps |
| Colours: | --> |
| Colours Label: | --> |
| Battles: | First Battle of Bull Run Battle of Gaines's Mill Second Battle of Bull Run Battle of Antietam Battle of Fredericksburg Battle of Gettysburg Battle of the Wilderness Battle of Spotsylvania Court House Battle of Cold Harbor Battle of Cedar Creek |
| Notable Commanders: | Alfred T.A. Torbert Mark Wilkes Collet |
The 1st New Jersey Infantry Regiment was an American Civil War Union Army regiment of infantry from New Jersey that served in the Army of the Potomac.
1st New Jersey Infantry Regiment was recruited and mustered into Federal service in May 1861, and was brigaded with the 2nd New Jersey Volunteer Infantry, 3rd New Jersey Volunteer Infantry, and the 4th New Jersey Volunteer Infantry to make up what became famed as the "First New Jersey Brigade". The regiment and brigade served as the 1st Brigade of the 1st Division of the VI Corps, and participated in numerous battles from the June 27, 1862, Battle of Gaines's Mill, Virginia, to the final Union assaults on Confederate positions at Petersburg, Virginia, in April 1865.
The remnants of the regiment were mustered out in June 1865.[1]
Notable members of the 1st New Jersey were:
The 1st New Jersey lost 244 men during their service. 153 men were killed in battle or died of wounds, 91 men died of disease and other causes.