Yunganglong is an extinct genus of basal hadrosauroid dinosaur known from the early Late Cretaceous lower Zhumapu Formation of Zuoyun County, Shanxi Province of northeastern China.

The generic name honors Yungang Grottoes, a UNESCO World Heritage site built in the 5th and 6th centuries about 50 km east of the fossil locality, and derived from long meaning "dragon" in Chinese.

To further explore the phylogenetic position of Y. datongensis among hadrosauriforms, Wang et al. (2013) used a modified version of the data matrix first presented by Sues and Averianov (2009).

In the strict consensus tree, Yunganglong was recovered as more advanced than Probactrosaurus, in an unresolved polytomy with Jintasaurus, Protohadros, Nanyangosaurus, Shuangmiaosaurus, Levnesovia, Bactrosaurus, Tanius, Telmatosaurus and the clade formed by Aralosaurus and Hadrosauridae.

[1] Altirhinus kurzanovi Iguanodon bernissartensis Ouranosaurus nigeriensis Equijubus normani Eolambia caroljonesa Fukuisaurus tetoriensis Probactrosaurus gobiensis Jintasaurus meniscus Nanyangosaurus zhugeii Protohadros byrdi Shuangmiaosaurus gilmorei Yunganglong datongensis Tanius sinensis Bactrosaurus johnsoni Levnesovia transoxiana Telmatosaurus transsylvanicus Aralosaurus tuberiferus Hadrosauridae