USS Grayling (SSN-646), a Sturgeon-class attack submarine, was the fifth ship of the United States Navy to be named for the grayling. Her keel was laid down in 1964, and she was launched just over three years later, and commissioned in 1969. She was involved in the submarine incident off Kola Peninsula on March 20, 1993, when she collided with the Russian Navy submarine Novomoskovsk. She was decommissioned in 1997, and disposed of a year later.