Surname Katsuomi (Katsuomi 
) , worldwide, is a very rare family name. The family name Katsuomi is habitual in China, where it is an extremely rare surname, and the United States. Much more frequently, Katsuomi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Katsuomi | Brazil, China, United States, Japan |
Sato, Takahashi, Kobayashi, Yokoyama, Yamamoto, Watanabe, Ishihara, Horikoshi, Nakahira, Nakayama, Nakamura, Kawajiri, Sugimoto, Yoshida, Iwamoto, Ichikawa, Noguchi, Nishida, Nobe, Tamai, Inoue, Ikeda, Ohata, Miyata, Nishikawa, Sekine, Tanaka, Tomita, Hanada, Furuta, Ishida, Yamada, Kusano, and Yoshikawa