Surname Bastun (Baston 
, Bastun 
, Bastum 
) , worldwide, is quite a rare cognomen. The family name Bastun is habitual in Romania, where it is quite a rare surname, Luxembourg, and Uruguay, where it is a rare surname. Measured by absolute frequency, the name is most common in the United States, Philippines, and Romania. Much less frequently, Bastun is the forename as well as the last name.