Cognomen Полай (Polay 
, Полай 
) , all over the world, is quite a rare surname. The cognomen Полай is habitual in Myanmar, where it is quite a rare surname, Hungary, where it is a rare surname, and Canada, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Myanmar, India, and the United States. Likewise, Полай is the forename as well as the last name.