Surname Бугаычук (Бугаычук 
, Bugaychuk 
) , worldwide, is a very rare family name. The last name Бугаычук is habitual in Estonia, where it is a rare surname, Greece, and Russia, where it is a very rare surname. In absolute terms, this name is the most popular in Russia, the United States, and Greece.
| VARIANT | COUNTRY |
|---|---|
| Бугаычук | Russia |
| Bugaychuk | Estonia, United States, Argentina, Greece, Ukraine |