| Named By: | Zheng, XiaoinTing, You, HaiinLu; Xu, Xing & Dong, ZhiinMing in 2009 |
| Time Period: | Late Jurassic, 158.5 Ma |
| Location: | China, Liaoning Province - Tiaojishan Formation |
| Size: | About 70 centimetres long |
| Diet: | Herbivore/Omniovore |
| Fossil(s): | Partial skull and mandible with partial post cranial remains |
| Classification: | | Chordata | Reptilia | Sinosauria | Ornithischia | Heterodontosauridae | |
Tianyulong (Chinese: Tian Yu Long ; Pinyin: tianyulong; named for the Shandong Tianyu Museum of Nature where the holotype fossil is housed) was a genus of heterodontosaurid ornithischian dinosaur. The only species was T. confuciusi, whose remains were discovered in Jianchang County, Western Liaoning Province, China.