Globally, Иваыло (Ivaylo 
, Иваыло 
) is quite a common boy's forename. The first name Иваыло is characteristic of Bulgaria, where it is a common boy's name, Aland Islands, where it is quite a common boy's name, and Andorra. Not in comparison with a country's population, it is the most numerous in Bulgaria, Greece, and Romania. Very seldom, Иваыло is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ivaylo | Romania, Spain, Bulgaria, United States, Greece |
| Иваыло | Russia |