Cognomen Trubetsky (Trubetsky 
, Трубецкий 
) , across the world, is a rare last name. The family name Trubetsky is characteristic of Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan. In absolute terms, this name is the most popular in Belarus, Russia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Trubetsky | United States |
| Трубецкий | Belarus, Kazakhstan, Russia |