Cognomen Hoiy (Hoiy 
) , across the world, is a very rare surname. The last name Hoiy is characteristic of Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Hoiy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hoiy | Canada, United States, Malaysia |