Sinornithosaurus was discovered by Xu Xing, Wang Xiaolin and Wu Xiaochun of the Institute of Vertebrate Paleontology and Paleoanthropology of Beijing.
Sinornithosaurusa su otkrili Xu Xing, Wang Xiaolin i Wu Xiaochun sa Instituta paleontologije kralježnjaka i paleoantropologije u Pekingu.