Cognomen Ivanouski (Ivanouski 
) , all over the world, is a very rare surname. The family name Ivanouski is habitual in Belarus, where it is a rare surname, Canada, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Belarus, Canada, and the United States. Very seldom, Ivanouski is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ivanouski | United States, Canada, Belarus, Venezuela |