William Denby Hanna was an American animator, voice actor, and occasional musician who is best known for co-creating Tom and Jerry and providing the vocal effects for the series' title characters. Alongside Joseph Barbera, he also founded the animation studio and production company Hanna-Barbera.

Tom and Jerry is an American animated media franchise and series of comedy short films created in 1940 by William Hanna and Joseph Barbera. Best known for its 161 theatrical short films by Metro-Goldwyn-Mayer, the series centers on the rivalry between the titular characters of a cat named Tom and a mouse named Jerry. Many shorts also feature several recurring characters.