Cognomen นิชิโอะ (Nichio 
, นิชิโอะ ) , in the entire world, is a rare surname. The last name นิชิโอะ is habitual in Argentina, where it is a rare surname, Brazil, where it is a very rare surname, and Thailand. Also, นิชิโอะ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nichio | Brazil, Thailand, Argentina, United States, Japan |
| นิชิโอะ | Thailand |