The Wicked Witch of the West is the main antagonist of The Wonderful Wizard of Oz, the first novel of the famous Oz series, and its classic 1939 film adaptation The Wizard of Oz. She is a malevolent witch who rules over the Winkie Country, as well as Dorothy's arch-nemesis.
In the film, she was portrayed by the late Margaret Hamilton, who also played Miss Almira Gulch in the same film and Mila Kunis in Space Jam: A New Legacy.