Last name Treyster (Treyster 
, Трейстер 
) , all around the world, is a rare cognomen. The family name Treyster is habitual in Russia, where it is a rare surname, Belarus, where it is a very rare surname, and Israel. Measured by absolute frequency, it is the most numerous in Russia, the United States, and Belarus. Very seldom, Treyster is the forename as well as the last name.