Last name Byat (Byat 
, بيات 
) , around the world, is a common family name. The cognomen Byat is characteristic of Iran, where it is a common surname, United Arab Emirates, where it is quite a rare surname, and Iraq, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Iran, Iraq, and Algeria. Much less frequently, Byat is the forename as well as the last name.