Last name Bayli (Baile 
, Bayli 
) , all over the world, is quite a common family name. The cognomen Bayli is characteristic of Lesotho, where it is quite a common surname, Botswana, where it is quite a rare surname, and Spain. Measured by absolute frequency, it most frequently occurs in India, Philippines, and Spain. Very seldom, Bayli is the forename as well as the last name.