Worldwide, Diannis (Diannis 
) is a very rare primarily girly, but very seldom male forename. The given name Diannis is characteristic of Latin America and the Caribbean, particularly the Dominican Republic, where it is a rare girly name, and Colombia, where it is a very rare feminine name. Likewise, Diannis is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Diannis | Greece, Colombia, Dominican Republic, Venezuela, United States |