Cognomen ז'ו (Jô 
, ז'ו 
) , throughout the world, is a rare last name. The last name ז'ו is habitual in Algeria, where it is a rare surname, Egypt, and Portugal, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Algeria, Egypt, and Brazil. More prevalently, ז'ו is the forename as well as the last name.