Family name Дадий (Dady 
, Dadiy 
, Dadii 
) , all over the world, is a common cognomen. The family name Дадий is characteristic of Algeria, where it is quite a rare surname, Cameroon, and Libya. In absolute terms, it is commonest in Algeria, Nigeria, and Myanmar. Likewise, Дадий is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dady | Democratic Republic of the Congo, Myanmar, Cameroon, Algeria, Indonesia |
| Dadiy | Algeria, India, Brazil, Ethiopia |
| Dadii | France, Ethiopia, India, Algeria, Morocco |
| Дадий | Russia, Ukraine |