USS Bladen (APA-63) was a Gilliam-class attack transport that served with the US Navy during World War II.

Bladen departed the west coast for Pearl Harbor 20 November 1944 and upon arrival embarked personnel of the 103rd and 109th Construction Battalions for Guam.

The attack transport debarked troops and provided logistic support during the assault and occupation of Iwo Jima (19–28 February).

With a passenger list of army and naval personnel, Blade sailed in August for Pearl Harbor, Eniwetok, and Ulithi.

On 22 January 1946 she proceeded to Pearl Harbor where she remained until 18 May undergoing preparations for Operation Crossroads, the atomic bomb tests at Bikini Atoll.