Last name Undey (Undey 
) , around the world, is a very rare family name. The family name Undey is characteristic of Canada, where it is a very rare surname, Turkey, where it is an extremely rare surname, and the United States. Not in comparison with a country's population, it is commonest in India, Canada, and Turkey.
| VARIANT | COUNTRY |
|---|---|
| Undey | Turkey, India, Canada, United States |