Cognomen Ithy (Ithy 
) , all over the world, is a very rare family name. The cognomen Ithy is habitual in Indonesia, where it is a very rare surname, India, where it is an extremely rare surname, and the United States. More frequently, Ithy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ithy | United States, India, Indonesia, Democratic Republic of the Congo |