Gary the Rat is an American television program adult-oriented animated series animated by Spike Animation Studios, produced by Grammnet Productions and distributed by Cheyenne Enterprises. It began as a Web cartoon in 2000 for Mediatrip.com. The series aired on Spike in 2003, lasting for one season.

The series was created by now re-structured studio BLITZ, formerly known as eStudio.

The complete series has not come to DVD. However, all episodes are available on the iTunes Music Store and the Zune Marketplace.