All over the world, Watashiwa (Watashiwa 
) is a very rare epicene forename. The first name Watashiwa is habitual in South-eastern Asia, particularly Indonesia, where it is a very rare epicene name. Much less frequently, Watashiwa is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Watashiwa | Malaysia, Philippines, Indonesia, United States |