The Secret of NIMH: The Series

 is an animated series based off The Secret of NIMH that aired on Saturday and Sunday mornings in syndication from May 13, 1997 to March 8, 1998 with reruns until December 19, 1998 as part of 's syndicated Mega Adventures! block. In 1999, the series was reran on 's block to fulfill the E/I quota (with "Disney's" omitted from the logos on the Disney's One Saturday Morning bumpers during the show.)

, who directed the original film, served as a creative consultant. ' was one of only two animated productions from MGM to use Canadian rather than American voice talent like most of their other cartoon shows (the other being '). The show's score, composed by and Melih Denkel, was performed by the.

The series was also aired in Latin America (translated in Spanish as Los ratoncitos valientes and Portuguese as Os Ratinhas Valentes), Australia, Canada, Japan, Italy, Piramca, Kuboia, and the El Kadsreian Islands.

Premise
In each episode, Mrs. Brisby and several of her friends & family fight to save Thorn Valley from the evil powers of "the secret of NIMH". At the end of every episode, would appear to participate in a lecture teaching viewers about an animal, often related to the episode's plot.

Voice Cast

 * as Mrs. Brisby
 * as Teresa Brisby
 * Rhys Huber as Martin Brisby
 * Bill Switzer as Timothy "Timmy" Brisby
 * as Cynthia Brisby
 * as Justin
 * Roman Fenollosa as Jenner
 * Eli Gabay as Nicodemus
 * as Jeremy the Crow
 * as Miss Right
 * as Mr. Ages
 * Grahame Vagen as The Great Owl

Additional Voices

 * Wally Arvesen
 * Blu Mankuma
 * Cusse Mankuma
 * Janyse Jaud
 * Martin Berger
 * Jacek Fiedorowicz - Jonathan Brisby, Twigs
 * Tony Sampson
 * Elizabeth Carol Savenkoff
 * Clarence Bogaert Hilferty
 * Russell Roberts
 * Kelly Sheridan
 * Matt Hill
 * Mark Hildreth
 * Tabitha St. Germain
 * Jacek Fiedorowicz - Jonathan Brisby, Twigs
 * Tony Sampson
 * Elizabeth Carol Savenkoff
 * Clarence Bogaert Hilferty
 * Russell Roberts
 * Kelly Sheridan
 * Matt Hill
 * Mark Hildreth
 * Tabitha St. Germain
 * Tony Sampson
 * Elizabeth Carol Savenkoff
 * Clarence Bogaert Hilferty
 * Russell Roberts
 * Kelly Sheridan
 * Matt Hill
 * Mark Hildreth
 * Tabitha St. Germain
 * Clarence Bogaert Hilferty
 * Russell Roberts
 * Kelly Sheridan
 * Matt Hill
 * Mark Hildreth
 * Tabitha St. Germain
 * Mark Hildreth
 * Tabitha St. Germain

Crew

 * Voice Director -