Tongan Guanzhi (Chinese: 同安觀志; Japanese: Dōan Kanshi) was a Zen Buddhist monk during the Five Dynasties and Ten Kingdoms period in 10th century China.

However, the basis for this belief comes from a text by Huihong called the Chanlin sengbao zhuan (Chronicle of the Sangha Treasure in the Groves of Chan), which was completed in 1119, many years after Tongan's death.

The Transmission of the Lamp instead claims that Tongan Guanzhi is the disciple of Tongan Wei, in turn a student of Jufeng Puman, with Jufeng being an apparently obscure student of the famous Dongshan Liangjie.

Both Tongan Wei and Jufeng Puman are listed for the first time in the Transmission of the Lamp, and neither with much information.

Dayang was close with Wang Shu, one of the compilers of Transmission of the Lamp, and as such it is unlikely that an error would have been made therein about his lineage.