USS Union (AKA-106) was a Tolland-class attack cargo ship of the United States Navy, the fourth ship of her name. She served in World War II, the Korean War and the Vietnam War.

North Carolina Shipbuilding Company was a shipyard in Wilmington, North Carolina, created as part of the U.S. Government's Emergency Shipbuilding Program in the early days of World War II. From 1941 through 1946, the company built 243 ships in all, beginning with the Liberty ship SS Zebulon B. Vance, and including 54 ships of the US Navy. Most of the latter were attack cargo ships (AKA), amphibious force flagships (AGC) and ammunition ships (AE). A list of all 54 Navy ships appears at the end of this article, as does a link to a detailed record of all ships built by the company.