The Land Before Time VI: The Secret of Saurus Rock is a 1998 direct-to-video animated adventure musical film and the sixth film in The Land Before Time series about four dinosaurs and a pterosaur who live in the Great Valley. It is the first film in which Thomas Dekker is the voice of Littlefoot. This was the second The Land Before Time direct-to-video film to be produced and directed by Charles Grosvenor.

Thomas Alexander Dekker is an American actor, musician, singer, director and producer. He is known for his roles as John Connor in Terminator: The Sarah Connor Chronicles, Adam Conant on The Secret Circle, and Zach on Heroes.