All around the world, Diaco (Diaco 
, Дьяко 
) is a very rare largely masculine, but uncommonly girly first name. The first name Diaco is habitual in Sweden, where it is a rare boy's name, Italy, where it is a very rare mostly masculine, but uncommonly feminine name, and Iran, where it is a very rare male name. More frequently, Diaco is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Diaco | Germany, France, Argentina, Italy, United States |
| Дьяко | Ukraine |