Family name Гейнер (Gainer 
, Гейнер 
) , in the world, is quite a common last name. The surname Гейнер is habitual in the United States, where it is quite a rare surname, Israel, where it is a rare surname, and Canada. Not in comparison with a country's population, the name is most common in the United States, Canada, and the United Kingdom. Much less frequently, Гейнер is the forename as well as the last name.