Family name নিষ্ঠুর (নিষ্ঠুর 
) , around the world, is a rare last name. The cognomen নিষ্ঠুর is habitual in Southern Asia, particularly Bangladesh, where it is a very rare surname. Also, নিষ্ঠুর is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| নিষ্ঠুর | Bangladesh |