Last name Гуиван (Guyvan 
, Guivan 
, Гуиван ) , all over the world, is a rare cognomen. The cognomen Гуиван is characteristic of Moldova, where it is quite a rare surname, Estonia, where it is a rare surname, and Hungary. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Russia, Moldova, and Hungary. More prevalently, Гуиван is the forename as well as the last name.