Olive Sloane (16 December 1896 – 28 June 1963) was an English actress whose film career spanned over 40 years from the silent era through to her death. Sloane's career trajectory was unusual in that for most of her professional life she was essentially an anonymous bit part actress, and her best, most substantial roles did not come until relatively late in her career when she was in her 50s. Her most famous film appearance is the 1950 production Seven Days to Noon.