Family name Kasuja (Kasuja 
) , all over the world, is a very rare cognomen. The family name Kasuja is habitual in Tanzania, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, Kasuja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kasuja | Tanzania, India, South Africa |