Globally, Ninjo (Ninjo 
) is a very rare mostly feminine, but uncommonly boy's forename. The given name Ninjo is characteristic of Southern Asia, particularly India, where it is an extremely rare principally female, but very infrequently masculine name. More frequently, Ninjo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ninjo | Japan, Germany, Philippines, United States, India |