Xu Hun (simplified Chinese: 许浑; pinyin: Xǔ Hún, fl. first half of ninth century) was a Chinese poet. He was poet in the Tang poetry tradition of the Tang Dynasty.

Two of Xu Hun's verses are included in the famous poetry anthology Three Hundred Tang Poems, both in the five-character regulated verse form. His work has been compared in style with Li Shangyin and Wen Tingyun.