USS Duncan (DD-485) was a Gleaves-class destroyer of the United States Navy. Federal at Kearny built her, and she was launched on 20 February 1942.
The Navy commissioned Duncan on 16 April 1942. She served as a destroyer from that spring date until the Battle of Cape Esperance in October.
On 11 October 1942 she fought in the Battle of Cape Esperance. In that action she closed the Japanese column alone, making the approach by herself. Gunfire from both sides struck her as she closed. That gunfire is what sank the ship.
She sank on 12 October 1942, the day after the battle, at Cape Esperance, about six miles north of Savo Island.
McCalla took off 195 men. With the ship sunk that day, the service of Duncan (DD-485) came to an end.
