From Wikipedia, the free encyclopedia. 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. 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 recurring character Felix Leiter in the first James Bond film Dr. No. Description above from the Wikipedia article Jack Lord, licensed under CC-BY-SA, full list of contributors on Wikipedia.