Family name Machuy (Machuy 
) , throughout the world, is a very rare surname. The family name Machuy is habitual in Germany, where it is a very rare surname, Mexico, where it is an extremely rare surname, and Brazil. Much less frequently, Machuy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Machuy | Brazil, United States, Germany, Mexico |