Surname Thomas-Christian (Thomas-Christian 
) , throughout the world, is an extremely rare last name. The cognomen Thomas-Christian is habitual in Northern America, particularly the United States, where it is an extremely rare surname. More frequently, Thomas-Christian is the forename as well as the last name. Parts of the name also exists independently as a first name Thomas, and a first name Christian.
| VARIANT | COUNTRY |
|---|---|
| Thomas-Christian | United States, Germany |