Four ships of the U.S. Navy have been named USS ''Maryland'':
* , a sloop during the Napoleonic Wars
* , a ''Pennsylvania''-class cruiser, saw action in World War I, later renamed USS ''Frederick''
* , a ''Colorado''-class battleship known as "Fighting Mary," saw action in World War II
* , an ''Ohio''-class ballistic missile submarine, commissioned in 1992, currently in active service
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United States Navy ship names