Yunju Daoying (Chinese: 雲居道膺; Japanese: Ungo Dōyō; Korean: Ungǒ Toyong; Vietnamese: Vân Cư Đạo Ưng) was a Zen Buddhist monk and teacher during the late Tang dynasty.

After receiving dharma transmission from Dongshan, he went to a place called Three Peak Hermitage, and finally to Mount Yunju, northeast of modern Nanchang in Jiangxi Province.

[1] Amongst modern Caodong/Sōtō practitioners, Tongan Daopi is commonly regarded as Yunju's successor through whom the Caodong teaching descended.

The Zutang ji (Patriarch's Hall Record), which was completed in 952, covers the life of Yunju Daoying, but does not mention Tongan Daopi as his disciple.

In other words, the Caodong school did not descend through Yunju as is commonly thought, but rather through another student of Dongshan Liangjie, namely Jufeng Puman.