Family name Trosclair (Trosclair 
) , around the world, is quite a rare last name. The cognomen Trosclair is habitual in the United States, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Trosclair | Canada, New Zealand, United States, United Kingdom, Peru |
| wayne trosclair chess player (b. 1952) |
|