Surname هادلي (Hadley 
, Hudley , هادلي 
) , throughout the world, is a common family name. The surname هادلي is habitual in Saint Vincent and the Grenadines, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and the United States. In absolute terms, it is the most numerous in the United States, the United Kingdom, and Australia. Very seldom, هادلي is the forename as well as the last name.