Last name Гуентхер (Guenther 
, Гуентхер 
) , in all the world, is a common family name. The last name Гуентхер is characteristic of Germany, where it is quite a common surname, Austria, and Cabo Verde. Not in comparison with a country's population, it most frequently occurs in Germany, the United States, and Canada. Much less frequently, Гуентхер is the forename as well as the last name.