Cognomen Hidenaga (Hidenaga 
) , around the world, is a very rare surname. The surname Hidenaga is habitual in Eastern Asia, particularly Japan, where it is a very rare surname. Much more frequently, Hidenaga is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hidenaga | Japan, China, Brazil, United States |
| kawajiri hidenaga |
|