Dr. Leonard H. McCoy, known as "Bones", is a character in the American science-fiction franchise Star Trek. McCoy was played by actor DeForest Kelley in the original Star Trek series from 1966 to 1969, and he also appears in the animated Star Trek series, in six Star Trek films, in the pilot episode of Star Trek: The Next Generation, and in numerous books, comics, and video games. A decade after Kelley's death, Karl Urban assumed the role of McCoy in the Star Trek reboot film in 2009.

Jackson DeForest Kelley, known to colleagues as "Dee", was an American actor, screenwriter, poet, and singer. He was known for his roles in Westerns and achieved international fame as Dr. Leonard "Bones" McCoy of the USS Enterprise in the television and film series Star Trek (1966–1991).