Surname Duthay (Duthay 
) , around the globe, is a very rare cognomen. The family name Duthay is characteristic of France, where it is a very rare surname, and India, where it is an extremely rare surname. Much less frequently, Duthay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duthay | India, United States, France |