Surname Malj (Maila 
, Malj 
, Malleus 
) , worldwide, is a common cognomen. The surname Malj is habitual in Sub-Saharan Africa, particularly South Africa, where it is quite a common surname, Botswana, and Lesotho, where it is quite a rare surname. In absolute terms, it most frequently occurs in India, South Africa, and Tanzania. Also, Malj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Maila | Philippines, Tanzania, India, Nepal, South Africa |
| Malj | China, India, Philippines |
| Malleus | Estonia, Brazil, Italy, United States, Finland |