Last name דמיאן (Damian 
, Damien , Demian ) , throughout the world, is a widespread cognomen. The last name דמיאן is characteristic of Romania, where it is a common surname, Guam, where it is quite a common surname, and Poland (explore the name in all countries). Not in comparison with a country's population, it is commonest in Mexico, Poland, and Romania. Also, דמיאן is the forename as well as the last name.