William Samuel Cook "Peter" Ellenshaw (24 May 1913 – 12 February 2007) was an English matte designer and special effects creator who worked on many Disney features.
He first worked in matte painting for producer Alexander Korda on such films as Things to Come (1936), and later on such Powell and Pressburger productions as Black Narcissus (1947) assisting his mentor W. (Walter) Percy Day.
He worked for MGM on Quo Vadis (1951), but his most extensive association was with Walt Disney Studios beginning with their first completely live action feature film, Treasure Island (1950).
both of which he collaborated with his son Harrison Ellenshaw, also a renowned matte artist and effects designer.
Numerous works were created, of both Disney and non-Disney themed subjects, which have been highly collected.