Cognomen Гайден (Gayden 
, Гайден 
) , around the world, is quite a rare last name. The family name Гайден is characteristic of the United States, where it is a rare surname, New Zealand, and the United Kingdom. Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Ukraine. Much less frequently, Гайден is the forename as well as the last name.