Beaverwood redirects here. For the tree, see Celtis occidentalis, more commonly known as the common hackberry.

Thumbsucker is a 2005 American independent comedy-drama film directed by Mike Mills and adapted from the Walter Kirn novel of the same name. It stars Lou Taylor Pucci, Tilda Swinton, Vincent D'Onofrio, Kelli Garner, Benjamin Bratt, Vince Vaughn, and Keanu Reeves. The movie focuses on teenager Justin Cobb as he copes with his thumb-sucking problem, and on his experiments with hypnosis, sex, and drugs.