American motion-picture and television producer and showman, famous as a pioneer of animated cartoon films and as the creator of such cartoon characters as Mickey Mouse and Donald Duck. He also planned and built Disneyland, a huge amusement park that opened near Los Angeles in 1955, and before his death he had begun building a second such park, Walt Disney World, near Orlando, Florida. The Disney Company he founded has become one of the world's largest entertainment conglomerates.