Surname Phail (Phail 
, 费尔 
) , all over the world, is a rare family name. The surname Phail is characteristic of Switzerland, where it is a rare surname, Belgium, and the United Kingdom, where it is a very rare surname. Measured by absolute frequency, it is commonest in the United States, India, and the United Kingdom. Also, Phail is the forename as well as the last name.