The third USS Raritan (LSM-540) was a LSM-1-class landing ship medium in the United States Navy following World War II.

She was named for a river in New Jersey.

Raritan was laid down on 10 May 1945 at Brown Shipbuilding Company, Houston, Texas, launched in August 1945, commissioned as USS LSM-540 on 6 December 1945.

She was decommissioned on 29 May 1946, at Green Cove Springs, Florida and laid up in the Atlantic Reserve Fleet, Florida Group, Green Cove Springs.

Recommissioned on 4 November 1957, she was renamed USS Raritan (LSM-540) on 14 October 1959, then decommissioned on 1 December 1959 at Norfolk, Virginia, and struck from the Naval Vessel Register on 1 January 1960.