Last name Seison (Seison 
) , in the world, is a rare cognomen. The family name Seison is characteristic of Japan, where it is a rare surname, the United States, where it is an extremely rare surname, and India. Also, Seison is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seison | Japan, India, Brazil, United States |