Family name Tornus (Torn 
, Tour 
, Torno ) , all around the world, is a common surname. The family name Tornus is characteristic of Bhutan, where it is quite a common surname, Estonia, and Mauritius, where it is quite a rare surname. In absolute terms, this name is the most popular in Indonesia, Philippines, and Algeria. Likewise, Tornus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Torn | India, France, United States, Indonesia, Germany |
| Tour | Philippines, India, France, Indonesia, Algeria |
| Torno | Philippines, India, France, United States, Indonesia |
| Tornus | Germany, United States |