John Joseph Patrick Ryan (December 30, 1920 – January 21, 1998), best known by his stage name, Jack Lord, was an American television, film and Broadway actor and director and producer. He was known for his starring role as Steve McGarrett in the American television program Hawaii Five-O from 1968 to 1980. Lord appeared in feature films earlier in his career, among them Man of the West (1958). He was the first actor to play the recurring character Felix Leiter in Dr.