Cognomen 毒 (毒 
, Duku 
) , globally, is a common family name. The surname 毒 is characteristic of Ghana, where it is quite a common surname, South Sudan, where it is quite a rare surname, and Mongolia. In absolute terms, this name is the most popular in China, Ghana, and Nigeria. Also, 毒 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 毒 | China |
| Duku | China, Ghana, India, Nigeria, South Sudan |