Globally, Hasei (Hasei 
) is a very rare largely female, but uncommonly boy's first name. The forename Hasei is characteristic of Southern Asia, particularly India, where it is an extremely rare predominantly girly, but very seldom masculine name. Much more prevalently, Hasei is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Hasei | Japan, Turkey, Malaysia, Mexico, India |