Longchengpterus was a genus of istiodactylid pterodactyloid pterosaur from the Barremian-Aptian-age Lower Cretaceous Jiufotang Formation of Chaoyang, Liaoning, China. The genus was named in 2006 by Wang Li, Li Li, Duan Ye and Cheng Shao-li. The genus name is derived from the old name of Chaoyang City, Longcheng, and a Latinised Greek pteron, "wing". The specific name honours Zhao Dayu, the president of Shenyang Normal University and a contributor to the founding of the Western Liaoning Institute of Mesozoic Paleontology.