USS Hammerhead (SSN-663), a Sturgeon-class submarine, was the second ship of the United States Navy to be named for the hammerhead shark, a voracious fish found in warm seas, with a curious hammerlike head.

In 1981, she won the Marjorie Sterrett Battleship Fund Award for the Atlantic Fleet.

Tom Clancy, author of the 1984 novel The Hunt for Red October, was given a brief ride into port aboard Hammerhead in the late 1980s prior to the filming of the 1990 film adaptation of the novel, also entitled The Hunt for Red October.

After spotting a mounted roll of toilet paper in Hammerhead's sonar room used for wiping grease pencil markings off the screens in the rooms, he proclaimed his intention to write the contrasting image of the low-technology toilet paper mount among all of the complicated electronics and other equipment aboard Hammerhead into the film.

Her scrapping via the Nuclear-Powered Ship and Submarine Recycling Program at Puget Sound Naval Shipyard in Bremerton, Washington, was completed on 22 November 1995.