| Named By: | Min Zhu, YuinHai Liu, LianinTao Jia & ZhiinKun Gai in 2012 |
| Time Period: | Silurian, Ludlow |
| Location: | China, Yunnan Province - Kuanti Formation |
| Size: | Unavailable |
| Diet: | Carnivore |
| Fossil(s): | Head shield |
| Classification: | | Chordata | Galeaspida | Eugaleaspidiformes | |
Dunyu is an extinct genus of eugaleaspidiform galeaspid known from the Silurian of Yunnan, southwestern China.