Music

The soundtrack is an original soundtrack by Richard Marvin, averaging about 30-35 minutes per episode.

With the exception of, all episodes have featured "Aunt Marie's Theme" during the credits. The theme did occur during the pilot episode, however. This piece is performed by a string quartet and is often featured when Nick is within the trailer. Other themes include "Renard's Theme", "Adalind's Theme", "The Key Theme", and the "Juliette-Trying-to-Get-Her-Memory-Back Theme".

Season 1
''This table is incomplete. If you have additional information, please add it.

Season 2
''This table is incomplete. If you have additional information, please add it.

Season 3
''This table is incomplete. If you have additional information, please add it.

Seasons 1 & 2 audio disc compilation (2013)
Track listing:
 * 1) Main Title (Season 1) (0:12)
 * 2) Main Title (Season 2) (0:33)
 * 3) Organ Grinder: Buying Gallbladder (1:52)
 * 4) Game Ogre: How to Kill an Ogre (4:21)
 * 5) Beeware: Call of the Wild (3:04)
 * 6) The Kiss: Juliette Wakes Up (3:03)
 * 7) Danse Macabre Lonelyhearts: Tracking Billy (2:32)
 * 8) The Three Bad Wolves: Beaver Morph (0:35)
 * 9) Goodnight, Sweet Grimm: Never Stopped Loving (2:09)
 * 10) Let Your Hair Down: Goofs in Car (0:42)
 * 11) Goodnight, Sweet Grimm: Zombie Attacks Nick (3:22)
 * 12) Mr. Sandman: What Kind of Spice Shop (1:47)
 * 13) Last Grimm Standing: Monroe Cage Fight (7:14)
 * 14) The Kiss: Renard Takes Potion (2:05)
 * 15) Goodnight, Sweet Grimm: Flies with Names (1:26)
 * 16) Bad Teeth: FBI Agent Killed (4:54)
 * 17) Bad Teeth: Bad Teeth / Kelly (4:41)
 * 18) The Kiss: Nick Awakes and Arrives Home (1:26)
 * 19) The Good Shepherd: Confronting Calvin (2:47)
 * 20) Of Mouse and Man: Quarry Fight (3:38)
 * 21) Season of the Hexenbiest:Renard Looks for Key (1:39)
 * 22) Natural Born Wesen: Bank Shoot Out (1:56)
 * 23) Natural Born Wesen: Key Necklace (1:45)
 * 24) Natural Born Wesen: Juliette Answers Phone (1:43)
 * 25) Goodnight, Sweet Grimm: Voodoo in Trunk (1:23)
 * 26) The Waking Dead: Reconnecting (2:12)
 * 27) Last Grimm Standing: Renard's Revenge / Nick Cage Fight (6:05)
 * 28) Goodnight, Sweet Grimm: Nick Vs. The Baron (7:18)
 * 29) End Credits (0:33) (Aunt Marie's Theme)