Not sure if you mean the names of the dinosaurs or the Dinobots. Cos most dinosaur names come from Greek, which is certainly the case for Tyrannosaurus, Stegosaurus, Pteranodon, Brontosaurus and Triceratops. Although "Rex" is Latin. The Dinobot names are actually all English. As
TFwiki points out, most Transformer names are actually of English origin, but more "elite" sounding character names come from Latin (or pseudo-Latin) - but occasionally also Greek (e.g. Megatron, Alpha Trion, Omega). And some are Latin via French (e.g. Mirage etc.)
