Burton Hill "Burt" Mustin (February 8, 1884 – January 28, 1977) was an American character actor. Over the course of his career, he appeared in over 150 film and television productions. He also worked in radio and appeared in stage productions. Mustin began his professional acting career at the age of 67 after director William Wyler cast him in the 1951 film noir Detective Story. Known for his dependability and versatility, Mustin went on to establish a career as a well-known character actor and worked extensively in film and television from the 1950s to the 1970s. His last major role was as Arthur Lanson on the CBS sitcom Phyllis, appearing on the show into early 1977, shortly before his death at almost 93 years old.