USS Buttress (PCE-878/ACM-4) was an auxiliary minelayer (ACM) in the United States Navy during World War II.

[1] Buttress was laid down as Patrol Craft Escort USS PCE-878 on 11 May 1943 at Portland, Oregon, by the Albina Engine & Machine Works; launched on 26 August 1943; and commissioned on 13 March 1944.

Following commissioning, she entered the Mare Island Navy Yard for conversion to a drill mine laying and recovery ship.

The ship was assigned to Service Squadron (ServRon) 6 and saw duty at advanced bases in the central and western Pacific Ocean through the end of the war.

[2][3] This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.