USS LST-900 was an LST-542-class tank landing ship in the United States Navy during World War II.

LST-900 was laid down on 1 October 1944 at Pittsburgh, Pennsylvania, by the Dravo Corporation; launched on 9 December 1944; sponsored by Mrs. Felix R. Konkle; and commissioned on 6 January 1945.

She cleared Hawaii 24 May; steamed in convoy via Eniwetok, Guam, and Saipan; and reached Okinawa, Ryukyus, 26 June.

During the next 2 weeks she discharged cargo and ammunition at Okinawa and Kerama Retto, and, after embarking medical officers and corpsmen, sailed for the Marianas 10 July.

While berthed in the Columbia River with ships of the Pacific Reserve Fleet, she was named Linn County on 1 July 1955.