Bellusaurus (meaning "Beautiful lizard", from Vulgar Latin bellus 'beautiful' (masculine form) and Ancient Greek sauros 'lizard') was a sauropod dinosaur from the Late Jurassic (Oxfordian)[1] known from juvenile specimens that would have measured about 4.8 metres (16 ft) long.

Its fossils were found in Shishugou Formation rocks in the northeastern Junggar Basin in China.

The remains of Bellusaurus were found in the Shishugou Formation in the northeastern Junggar Basin in China.

Seventeen individuals were found in a single quarry, suggesting that a herd had been killed in a flash flood.

Bellusaurus was originally placed in the Brachiosauridae by Dong, based on a historical classification scheme in which Brachiosauridae was used as a catch-all for sauropods with broad teeth, including taxa such as Camarasaurus, Cetiosaurus, and Euhelopus, rather than implying a close relationship with Brachiosaurus in particular.