Family name Faolán (Phelan 
, Faolán) , in the entire world, is a common cognomen. The last name Faolán is characteristic of Ireland, where it is a common surname, Isle of Man, where it is quite a common surname, and Australia, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in the United States, Ireland, and the United Kingdom. Very seldom, Faolán is the forename as well as the last name.