USS Suffolk County (LST-1173) was a De Soto County-class tank landing ship built for the United States Navy during the late 1950s.

Suffolk County fitted out at Boston and sailed for Norfolk, Virginia on 1 October to hold shakedown training and exercises in beaching.

Suffolk County departed Norfolk on 8 September and, after embarking marines at Morehead City, North Carolina sailed for the Mediterranean and her first tour with the 6th Fleet.

As a unit of PhibRon 8, the ship participated in a landing demonstration off Onslow Beach, North Carolina from 29 October to 3 November.

However, she was called upon to operate off Guantánamo Bay from 25 April to 5 May and off the Dominican Republic from 1 to 13 June because of the international tension those two countries were creating.

Suffolk County aided the inhabitants of Cayes-Jacmel, Anse-à-Pitres, and Marigot, on the southern coast of Haiti, until 7 October.

Normal peacetime, east coast operations were resumed until September 1970 when she steamed to the Mediterranean to partake in a two-month exercise with North Atlantic Treaty Organization (NATO) fleet units which ended on 18 November 1970.

Disposed of by transfer to the Maritime Administration (MARAD) on 15 April 1992 for lay-up in the National Defense Reserve Fleet at James River, Fort Eustis, Virginia, the ship was sold for $500 to Transforma Marine of Brownsville, Texas for scrapping, 31 March 1999.