Last name Katsuoki (Katsuoki 
, Мидзуно 
) , globally, is an extremely rare cognomen. The family name Katsuoki is characteristic of Eastern Europe, particularly Russia, where it is an extremely rare surname. More frequently, Katsuoki is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Katsuoki | Japan, Brazil |
| Мидзуно | Russia |