In a passport, the surname refers to the family name or last name.pdf). When filling out applications or forms, it is important to enter the surname as it appears on the passport, travel, or identity document.pdf). If the passport does not have a family name, all given names should be entered in the surname field and the given name field should be left blank. It is important not to use initials or enter "Not applicable," "*", or "NA". If the entire name is written in the surname field and the given name field is left blank, the consulate will treat the entire name as the surname and write "FNU" (First Name Unknown) in the first name section.pdf). If a person has more than one name but they are all written as either the surname or given name, and they do not want "FNU" or "LNU" as part of their name on their visa, they should get their passport changed before applying for the visa.pdf).