The Phai are an ethnic group in Thailand and Laos. They are one of two sub-groups of the Lua people (the other one being the Mal).
The Phai are also commonly referred to as Prai, Phay, Thung Chan Pray, Kha Phay, and Pray. In Laos they are also referred to as Htin.
The Phai speak a language also called Phai, which belongs to the Khmuic branch of Austroasiatic languages There are several dialects called Phai, that are sometimes hardly mutually intelligible.
There are also dozens of Prai villages in Thailand.
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