The Worst Witch is a series of children's novels by Jill Murphy.
The Worst Witch may also refer to:
- The Worst Witch (film), a 1986 British television film based on the novels
- The Worst Witch (1998 TV series)
- Weirdsister College, a sequel series to the 1998 television series
- The New Worst Witch, a spin-off series to the 1998 television series
- The Worst Witch (2017 TV series)