USS William Seiverling (DE-441) was a John C. Butler-class destroyer escort acquired by the United States Navy during World War II.

He began service as a private on 19 June 1942 and was deployed to the Guadalcanal Campaign helping to wrest control of that island from the Japanese.

On 1 November 1942 during the Japanese attack across the Matanikau River Seiverling ran down the hill in the face of enemy fire, killing at least one sniper and perhaps several others.

For the remainder of September and during the first week in October, those operations consisted of torpedo, surface gunnery, and shore bombardment exercises.

After 8 October, William Seiverling began antisubmarine warfare duty, first on a training basis and, after 1 November, as a unit of a hunter-killer force built around Corregidor.

On 28 December, the destroyer escort departed Ulithi in company with the Tulagi group to provide ASW support for the Lingayen landings scheduled for the beginning of the second week in January 1945.

On the latter day, she sortied with the task group and set a course—via the Surigao Strait, the Sulu Sea, and the South China Sea—for Luzon.

During the transit, enemy air attacks were frequent, but William Seiverling never got into the action until she arrived off Lingayen Gulf on 7 January.

That same day, she departed Ulithi with that task unit and headed—via Guam—to the vicinity of Iwo Jima to support the battle then in progress for that island.

For about a month, she and the other ships of the task unit conducted antisubmarine patrols of the sea lanes between the Marianas and Iwo Jima.

William Seiverling remained at Ulithi completing logistics until 21 March at which time she got underway with TG 52.1 to support the assault on and occupation of Okinawa.

On 28 May, the destroyer escort received orders to join the screen of TG 30.7 with which she conducted antisubmarine patrols about 400 miles north of Guam.

She conducted antisubmarine patrols with that escort carrier until 1 August at which time the task unit set a course for Leyte and temporary duty with the U.S. 7th Fleet.

She continued patrols of that nature, operating from the base on Leyte near San Pedro Bay until 27 August at which time she set a course for Japan and duty in conjunction with the occupation.

She supported the occupation forces in Japan until 17 October when she departed Yokosuka to escort a convoy of tank landing ships to Manila.

After stops at Guam, Eniwetok, and Pearl Harbor, William Seiverling arrived in San Pedro, Los Angeles, on 26 November.

On 8 September, while operating with minesweepers in the inner harbor at Wonsan, the destroyer escort drew fire from an enemy shore battery.

Throughout the brief action, he consistently straddled William Seiverling and succeeded in scoring three hits, one of which struck the ship below the waterline at the number 2 fireroom.

She resumed local operations until January 1954 at which time the warship entered the Long Beach Naval Shipyard for overhaul.

The warship arrived in Japan on 8 June but was soon back in Korean waters participating in a landing exercise at Sokcho Ri.

Between 29 June and 26 July, the ship made a series of goodwill visits to the Japanese ports of Kobe, Nagoya, Muroran, and Niigata.

Also during that deployment, she visited Maizuru, Japan, where, in June and July 1955, she took custody of lend-lease ships being returned to the United States.

Her second and final deployment of that period took her to the southwestern Pacific for visits to New Zealand and Australian ports before she headed north for duty on the Taiwan Strait patrol.