| Conflict: | Battle of Port Walthall Junction |
| Partof: | the American Civil War |
| Date: | May 6–7, 1864 |
| Place: | Chesterfield County, Virginia |
| Map Type: | Virginia |
| Map Size: | 300 |
| Result: | Union victory |
| Combatant1: |  United States (Union) |
| Combatant2: | CSA (Confederacy) |
| Commander1: | Benjamin Butler |
| Commander2: | Johnson Hagood |
| Strength1: | 8,000 |
| Strength2: | 2,600 |
| Casualties3: | 550 |
The Battle of Port Walthall Junction was fought May 6–7, 1864, between Union and Confederate forces during the Bermuda Hundred Campaign of the American Civil War. Although initially successful, the Confederates were eventually defeated, allowing Union forces to cut a railroad. The Port Walthall Junction on the Richmond-Petersburg Railroad connected with the spur to Port Walthall.
In conjunction with the opening of Lt. Gen. Ulysses S. Grant's Overland Campaign, Maj. Gen. Benjamin Butler's Army of the James, 33,000 strong, disembarked from transports at Bermuda Hundred on May 5, threatening the Richmond-Petersburg Railroad. On May 6, Confederate Brig. Gen. Johnson Hagood's brigade stopped initial Federal probes at Port Walthall Junction. On May 7, a Union division drove Hagood's and Brig. Gen. Bushrod Johnson's brigades from the depot and cut the railroad at Port Walthall Junction. Confederate defenders retired behind Swift Run Creek and awaited reinforcements.
Union casualties were more than 300, Confederates fewer than 200, primarily from Hagood's brigade.[1]