William Charles "Bill" Littlejohn (January 27, 1914 – September 17, 2010) was an American animator and union organizer.
Littlejohn worked on animated shorts and features in the 1930s through to the 1990s.
His notable works include the Tom and Jerry shorts, Peanuts television specials, the Oscar-winning short, The Hole (1962), and the Oscar-nominated A Doonesbury Special (1977).
He was inducted into the Cartoon Hall of Fame and received the Winsor McCay Award and garnered lifetime achievement awards from the Annie Awards and the UCLA Film and Television Archive.
Director Michael Sporn has called Littlejohn "an animation 'God'."Littlejohn co-founded and served as the first president of the Screen Cartoonists Guild Local #852 in 1938.
He led the effort to gain recognition for the union at the major Hollywood animation studios.
When Walt Disney refused to negotiate with the union and fired 16 pro-union artists, Littlejohn led the union in the 1941 Disney animators strike.
The strike lasted nine weeks and resulted in Disney's recognition of the union, substantial salary increases, a 40-hour work week and screen credits.