Cognomen Kadoy (Kadoy 
) , around the world, is a very rare family name. The surname Kadoy is habitual in South-eastern Asia, particularly Myanmar, where it is a very rare surname, Indonesia, and Philippines, where it is an extremely rare surname. Much less frequently, Kadoy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kadoy | Myanmar, Indonesia, Philippines |