Last name Боиарчук (Боиарчук 
, Boyarchuk 
) , in the world, is a rare cognomen. The family name Боиарчук is characteristic of Belarus, where it is a rare surname, Canada, where it is a very rare surname, and Norway. Not in comparison with a country's population, it is commonest in Russia, Belarus, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Боиарчук | Russia |
| Boyarchuk | Russia, Belarus, United States, Canada, Ukraine |