Family name Kowashi (Kowashi 
) , globally, is quite a rare cognomen. The cognomen Kowashi is habitual in Japan, where it is quite a rare surname, Israel, where it is a rare surname, and India, where it is an extremely rare surname. Very seldom, Kowashi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kowashi | Brazil, United States, Israel, India, Japan |