USS Fairfield (AK-178) was an Alamosa-class cargo ship acquired by the U.S. Navy during the final months of World War II.

The second ship to be so named by the Navy, Fairfield was launched on 6 February 1945, by Kaiser Cargo Inc., Richmond, California, under a Maritime Commission contract, MC hull 2374; sponsored by Mrs. Henry W. Creeger; acquired by the Navy on a loan-charter basis; and commissioned on 28 March 1945.

[3] Fairfield completed shakedown and fitting out before 8 May, when she arrived at San Francisco, California, to load cargo for Manus, Samar and Calicoan Islands.

In early July she loaded US Army cargo at Parang, Mindanao, and was en route to Agusan province when on the 14th she picked up six Filipino guerillas from the wreckage of their boat which had been cut in two and sunk by a submarine.

On 8 January 1946 a Japanese crew came on board for training and on the 11th she was decommissioned and turned over to the War Shipping Administration for disposal.