USS LST–542 was the lead ship of her class of tank landing ships built for the United States Navy during World War II. She was later named USS Chelan County (LST-542) for the county in Washington, the only U.S. Naval vessel to bear the name. The LST-542-class was built with a water-distilling plant and heavier armament than the earlier LST-1 class, which slightly decreased their payload.