Surname Pastus (Pastus 
) , in all the world, is a very rare cognomen. The family name Pastus is habitual in Peru, where it is a rare surname, Israel, where it is a very rare surname, and the United States, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Peru, India, and Israel. Much less frequently, Pastus is the forename as well as the last name.