William Harrigan was an American actor who performed in Hollywood during the 1930s and 1940s and on stage.

The Invisible Man is a 1933 American science fiction horror film directed by James Whale based on H. G. Wells' 1897 novel, The Invisible Man, produced by Universal Pictures, and starring Gloria Stuart, Claude Rains and William Harrigan. The film involves a Dr. Jack Griffin (Rains) who is covered in bandages and has his eyes obscured by dark glasses, the result of a secret experiment that makes him invisible, taking lodging in the village of Iping. Never leaving his quarters, the stranger demands that the staff leave him completely alone until his landlady and the villagers discover he is invisible. Griffin goes to the house of his colleague, Dr. Kemp and tells him of his plans to create a reign of terror. His fiancée Flora Cranley, the daughter of his employer Dr. Cranley, soon learn that Griffin's discovery has driven him insane, leading him to prove his superiority over other people by performing harmless pranks at first and eventually turning to murder.