USLHT Azalea was an American lighthouse tender that operated in the fleet of the United States Lighthouse Board from 1891 to 1910 and of the United States Lighthouse Service from 1910 to 1917 and from 1919 to 1933. During and in the immediate aftermath of World War I, she served in the United States Navy as USS Azalea from 1917 to 1919. During World War II, she became the U.S. Navy seaplane tender USS Christiana (YAG-32) in 1942.