Last name Хайам (Hyam 
, Khayam 
, Hayyam 
) , in the entire world, is quite a rare surname. The cognomen Хайам is characteristic of Isle of Man, where it is quite a rare surname, United Arab Emirates, and the United Kingdom, where it is a rare surname. Measured by absolute frequency, the name is most common in Pakistan, the United Kingdom, and India. Also, Хайам is the forename as well as the last name.