The Blue Knight as a name or title has several meanings:

• Greg Valentine (born 1951), also known as "The Blue Knight", an American professional wrestler
• HMM-365 - United States Marine Corps helicopter squadron known as the Blue Knights.
• The Blue Knight (novel), a novel by Joseph Wambaugh
• The Blue Knight (film) (1974), a made-for-television film based on the novel by Joseph Wambaugh
• The Blue Knight (TV series), a television series based on the novel by Joseph Wambaugh
• The Blue Knights are a fraternal organization of police officers throughout the whole world who have a strong interest in riding motorcycles for recreation.
• The Blue Knight (Tokyo Mew Mew) is the name of a fictional character in the manga and anime series Tokyo Mew Mew

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