Cognomen Бизган (Bizgan 
, Бизган 
, Byzgan) , around the world, is quite a rare family name. The cognomen Бизган is habitual in Romania, where it is quite a rare surname, Moldova, and Switzerland, where it is a rare surname. Measured by absolute frequency, the name is most common in Romania, Moldova, and Italy. Much less frequently, Бизган is the forename as well as the last name.