Cognomen ฮาร์ลีย์ (Harley 
, ฮาร์ลีย์) , all around the world, is a common surname. The cognomen ฮาร์ลีย์ is characteristic of Jersey, where it is quite a common surname, Jamaica, and the United Kingdom, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Australia. Likewise, ฮาร์ลีย์ is the forename as well as the last name.