USS Rainbow (AS-7) is the only ship in the United States Navy by that name. The ship was originally converted to a distilling ship in 1898, and then converted again in 1917 to a submarine tender.
Rainbow was built in 1890 as the merchant ship Norse King by James Laing at Sunderland, England. She was purchased by the U.S. Navy on 29 June 1898, placed in reduced commission on 18 July, and transferred to the New York Navy Yard for fitting out for use as a distilling and station ship in the Philippines.