Wicked Witch is a name for:
- The hag, a stock character in fairy tales
- The Wicked Witch of the West, the main antagonist in L. Frank Baum's book The Wonderful Wizard of Oz as well as Metro-Goldwyn-Mayer's 1939 film adaptation
- The Wicked Witch of the West (Once Upon a Time) (known by the name Zelena), is a character from the ABC television series Once Upon a Time
It may also refer to:
- "Wicked Witch", a song by Nardo Wick from the album Who Is Nardo Wick? (2021)
- "Wicked Witch", a song by Lovebites from the album Judgement Day (2023)
- Wicked Witch Software, a video game developer
Other characters in the fictional land of Oz:
- Wicked Witch of the East
- Wicked Witch of the North, also known as Mombi
- Wicked Witch of the South