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, Cameroon, Indonesia, Algeria, Myanmar |
| Dadiy | Ethiopia, India, Brazil, Algeria |
| Dadii | Morocco, Ethiopia, France, Algeria, India |
| Дадий | Russia, Ukraine |