Surname 本西 (本西 
, Bensey 
, Motonishi 
) , worldwide, is a rare cognomen. The surname 本西 is characteristic of Peru, where it is a very rare surname, the United States, and Italy, where it is an extremely rare surname. In absolute terms, the name is most common in the United States, China, and Peru. Also, 本西 is the forename as well as the last name.