Family name Thi Thu (Thi Thu 
) , around the globe, is a rare surname. The last name Thi Thu is characteristic of U.S. Virgin Islands, where it is quite a common surname, Vietnam, where it is a rare surname, and France, where it is an extremely rare surname. Also, Thi Thu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thi Thu | Canada, U.S. Virgin Islands, Vietnam, Sweden, France |