Family name Gerin (Gerin , Герин , 热兰) , in all the world, is quite a common cognomen. The surname Gerin is characteristic of Bosnia and Herzegovina, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and France. Not in comparison with a country's population, it most frequently occurs in France, Italy, and Belgium. Much less frequently, Gerin is the forename as well as the last name.