Cognomen Glasi (Glasi 
) , across the world, is a very rare family name. The cognomen Glasi is characteristic of Tunisia, where it is a rare surname, Italy, where it is a very rare surname, and South Africa, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Italy, Tunisia, and India. More frequently, Glasi is the forename as well as the last name.