Lydia Deetz is the deuteragonist of the television series, Beetlejuice. She is Beetlejuice's best friend, and is played by Winona Ryder.
- Lydia is the first Goth to appear on cartoons and has inspired many Goth characters.
- She is voiced by Alyson Court, who also played Loonette the Clown from The Big Comfy Couch.
- Ally Sheedy, Jennifer Connelly, Brooke Shields, Juliette Lewis, and Molly Ringwald were considered to play her.