Last name ไภ้ (Phai 
, ไภ้) , throughout the world, is quite a rare cognomen. The surname ไภ้ is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname, Malaysia, where it is a rare surname, and Myanmar. Measured by absolute frequency, the name is most common in India, Myanmar, and Laos. Likewise, ไภ้ is the forename as well as the last name.