Cognomen Игоь (Igo 
, Игоь 
, Igo' 
) , all over the world, is quite a common last name. The cognomen Игоь is habitual in Papua New Guinea, where it is quite a rare surname, Indonesia, where it is a rare surname, and Nigeria. Not in comparison with a country's population, it is the most numerous in Indonesia, the United States, and Nigeria. Also, Игоь is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Igo | Indonesia, Nigeria, United States, Papua New Guinea, Brazil |
| Игоь | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| Igo' | China |