Surname Byak (Byak 
, ပျက် 
) , all around the world, is a very rare family name. The cognomen Byak is characteristic of Australia, where it is a rare surname, Myanmar, where it is a very rare surname, and New Zealand. Measured by absolute frequency, it is commonest in Australia, Myanmar, and India. Very seldom, Byak is the forename as well as the last name.