- in service
- U.S. Navy
- the 32nd Arleigh Burke-class guided missile destroyer.
- USS Hopper is named for Medal of Honor recipient Commander Clyde Everett Lassen.
- On 15 February 2009, Lassen collided with a Japanese 14-ton pleasure boat in Yokosuka harbor.
- On 27 October 2015 Lassen navigated within 12 nautical miles of Subi Reef(渚碧礁及美濟礁), one of seven artificial islands built up by China in the Spratly Islands(南沙群島)
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