Surname Chammo (Chammo 
) , throughout the world, is a very rare cognomen. The last name Chammo is habitual in Lebanon, where it is a rare surname, Australia, where it is a very rare surname, and Turkey, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Lebanon, Brazil, and the United States. More frequently, Chammo is the forename as well as the last name.