Surname Маиданюк (Маиданюк 
, Maidanyuk 
, Maidanjuk 
) , all over the world, is a rare cognomen. The surname Маиданюк is characteristic of Estonia, where it is a rare surname, Belarus, where it is a very rare surname, and Poland. Measured by absolute frequency, this name is the most popular in Russia, Poland, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Маиданюк | Russia |
| Maidanyuk | Belarus, Russia, Ukraine |
| Maidanjuk | Germany, Estonia |
| Maydanyuk | Poland, Ukraine, United States, Russia, Estonia |