Beast Wars: Transformers (Beasties on YTV) is a Transformers toyline released by Hasbro between 1995 and 1999. The toys spawned a full-CG animated series set in the "original" Transformers universe, produced by Mainframe Entertainment of Canada. The series debuted in 1996, as a sequel to the original Transformers (which was later rebooted by various limited comic book stories from several companies including Dreamwave comics and IDW.)

Due to a regulation by the Canadian Radio-television and Telecommunications Commission, the word "war" cannot be used in the title of any show broadcast by a Canadian station. As a result, the series was renamed Beasties, with the themesong changed to reflect this. Another toy-based series from Mainframe Entertainment, War Planets, also fell under this rule, and was similarly renamed as Shadow Raiders.

The story editors for the Beast Wars TV series were Bob Forward and Larry DiTillio. All three seasons are currently available on DVD in the USA and other Region 1 territories. In Australia, to coincide with the show's tenth anniversary in 2006, Madman Entertainment released all three seasons in Region 4 format. These boxsets are loaded with 'world exclusive' special features, including commentaries and interviews with the voice talent.

The Production Designer for the show, Clyde Klotz, won an Emmy for Outstanding Individual Achievement in Animation in 1997 for his work on Beast Wars, making the series an Emmy award winning show.

Two spaceships, one manned by benevolent Maximals, the other by evil Predacons, crash-land on a pre-humanoid planet while en route to Earth. Their crews assume indigenous animal forms to protect themselves from an overabundance of natural energy, transforming into robots to do battle. Thus, the Beast Wars have begun... Written by Aaron Teitlebaum

Centuries after the Cybertronian Wars, a small rebel group of criminal Predacons pursuing a group of heroic Maximal explorers crash-land on a primitive world. They assume native animal forms to protect themselves from the planet's rife amounts of energy, transforming into robots to do battle. As the Maximals fight to stop the Predacons from conquering the galaxy with this strange world's power and seek a way home, they are discovering the majesty of its wilderness and the threat posed by its mysterious alien caretakers. Written by Tom Nguyen