Mykolaichuk () is a Ukrainian patromymic surname. It may also be rendered as Mikolaichuk or Mikolaychuk. Ukrainian surname:

Ivan Mykolaichuk Maria Mykolaichuk

See also

8244 Mikolaichuk, minor planet 8244 Mikolachuk, minor planet

ru:Миколайчук uk:Миколайчук