Surname Saniz (Saniz 
) , worldwide, is a rare cognomen. The last name Saniz is characteristic of Latin America and the Caribbean, particularly Peru, where it is a rare surname, Bolivia, and Nicaragua, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Peru, Bolivia, and Turkey. Much less frequently, Saniz is the forename as well as the last name.