Last name Ронай (Ronay 
, Ронай 
) , in the entire world, is quite a rare cognomen. The family name Ронай is habitual in Hungary, where it is quite a rare surname, Mexico, where it is a rare surname, and Austria. Measured by absolute frequency, this name is the most popular in Mexico, Hungary, and the United States. Also, Ронай is the forename as well as the last name.