Cognomen ゼフ (Zeff 
, ゼフ) , around the globe, is a rare last name. The surname ゼフ is characteristic of the United States, where it is a rare surname, the United Kingdom, and Australia, where it is a very rare surname. Not in comparison with a country's population, the name is most common in the United States, Indonesia, and the United Kingdom. Likewise, ゼフ is the forename as well as the last name.