Aunt Lucinda is a supporting protagonist in The Spiderwick Chronicles.
Lucinda Spiderwick is Arthur Spiderwick's daughter. As a kid, she lost her father when he was spirited away to the realm of Faerie. No one believed her story, and she was put away in an insane asylum. The Grace children visit Lucinda and she tells them what had happened and warns them about the dangers of the Faerie world. She is also very helpful to the Grace family.
- Aunt Lucinda is played by Joan Plowright in the film adaptation.