Last name Иган (Egan 
, Igan 
, Ygan 
) , all over the world, is a common family name. The family name Иган is habitual in Ireland, where it is a common surname, Australia, where it is quite a common surname, and the United Kingdom, where it is quite a rare surname. In absolute terms, this name is the most popular in the United States, Ireland, and the United Kingdom. Very seldom, Иган is the forename as well as the last name.