The Secret of NIMH 2: Timmy to the Rescue is a 1998 American direct-to-video animated musical adventure film produced by MGM Animation and the sequel to the 1982 animated film The Secret of NIMH. The plot, unrelated to Racso and the Rats of NIMH, the sequel to the book on which the original film was based, follows Timothy Brisby, the youngest son of Mrs. Brisby and her late husband, travels to Thorn Valley, hoping to become a hero like his father. There, he meets a young female mouse named Jenny and learns that the mice presumed dead during the NIMH escape are still alive, so they mount a rescue operation.

Unlike the first film, the sequel used digital ink and paint. Created without the support or input of the first film's director Don Bluth, it was panned by critics.