Donald Paul Bellisario (born August 8, 1935) is an American television producer and screenwriter. He is known for creating and sometimes writing episodes for the TV series "Magnum, P.I." (1980–1988), "Tales of the Gold Monkey" (1982–1983), "Airwolf" (1984–1987), "Quantum Leap" (1989–1993), "JAG" (1995–2005) and "NCIS" (since 2003).