Around the world, Cassou (Cassou 
) is a very rare primarily girly, but very infrequently boy's first name. The first name Cassou is habitual in Western Europe, particularly France, where it is a rare principally girly, but scarcely male name. More prevalently, Cassou is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Cassou | France, Brazil, Uruguay, United States, Argentina |