Cognomen Gusnay (Gusnay 
, Гуснай 
) , all around the world, is a very rare family name. The cognomen Gusnay is habitual in Ukraine, where it is a rare surname, Russia, where it is a very rare surname, and Ecuador. Measured by absolute frequency, this name is the most popular in Ukraine, Russia, and France. Much less frequently, Gusnay is the forename as well as the last name.