Last name Gegn (Gain 
, Gayn 
, Gein 
) , across the world, is a widespread family name. The family name Gegn is habitual in India, where it is quite a common surname, Bangladesh, where it is quite a rare surname, and Qatar. In absolute terms, the name is most common in India, Bangladesh, and France. Much less frequently, Gegn is the forename as well as the last name.