Family name ធនុ (Dhanu 
, ធនុ 
) , around the globe, is a common last name. The cognomen ធនុ is characteristic of Sri Lanka, where it is quite a rare surname, Qatar, and Bahrain. Not in comparison with a country's population, it most frequently occurs in India, Indonesia, and Sri Lanka. More prevalently, ធនុ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dhanu | Indonesia, Sri Lanka, Nepal, India, Saudi Arabia |
| ធនុ | Cambodia |