Last name Casei (Casei 
) , all over the world, is a very rare cognomen. The surname Casei is habitual in Romania, where it is a rare surname, Argentina, where it is a very rare surname, and Germany, where it is an extremely rare surname. Likewise, Casei is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Casei | Germany, Romania, United States, Argentina, Venezuela |
| nedda casei American singer (1932-2020), US (b. 1932) |
|