Dinobots is the name of several teams of characters in the fiction

Fiction

Fiction is the form of any narrative or informative work that deals, in part or in whole, with information or events that are not factual, but rather, imaginary—that is, invented by the author. Although fiction describes a major branch of literary work, it may also refer to theatrical,...

al Transformers Universe

Transformers (toy line)

The is a line of toys produced by the American toy company Hasbro. The Transformers toyline was created from toy molds mostly produced by Japanese company Takara in the toylines Diaclone and Microman. Other toy molds from other companies such as Bandai were used as well...

. The groups are made up of several robots, each of whose transformed mode is that of a dinosaur

Dinosaur

Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...

 or similar prehistoric animal. They are called Dinotrons in the Japanese version; and in the Japanese dub of Transformers Animated. They were named among the top selling toys in 1985 by Playthings magazine.
The Dinobots are a group of Transformers, part of the Autobot

Autobot

Autobot, a faction of sentient robots from the planet Cybertron, are usually the main protagonists in the fictional universe of the Transformers, a collection of various toys, graphic novels, paperback books, cartoons and movies first introduced in 1984. In all but one Transformer story, the...

 faction.