Surname תיירי (Thierry 
, Thiéry 
, תיירי 
) , in the world, is a common cognomen. The last name תיירי is characteristic of Guadeloupe, where it is quite a common surname, British Virgin Islands, and Monaco (explore the name in all countries). Measured by absolute frequency, it is the most numerous in France, Cameroon, and the Democratic Republic of the Congo. More frequently, תיירי is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thierry | Belgium, Democratic Republic of the Congo, France, Cameroon, Ivory Coast |
| Thiéry | France, United States, Canada, Belgium |
| תיירי | Israel |